Twelve months into running advantage betting in Australia, looking back at the version of me who opened his first bookmaker account on a Tuesday in November 2023, there are a lot of things I wish I'd known. Some of them I would have done differently. Some of them I would have done the same but with less anxiety. This is the letter.
No structured lessons section. Just things I actually think about when I reflect on the first year, in roughly the order they mattered.
The bankroll was too aggressive
I started with $4,800 across fourteen accounts. On paper that sounds conservative. In practice it meant my average bet size had to be small relative to the available arb margins, and when drawdowns came - they came - my emotional relationship with the money was worse than the absolute dollar amounts justified.
If I were starting again I'd begin with closer to $8,000-$12,000 and plan to deploy only half of it in the first three months. The extra headroom would have let me take the quarter-Kelly sizing seriously rather than defaulting to flat-stake amounts that were psychologically manageable but not optimal. The bankroll guide was the piece of reading I most wish I'd internalised earlier.
I took the gubbings way too personally
The first three times a bookmaker cut my account I treated it as a personal failure. I was convinced I'd done something wrong, tried to reverse-engineer which specific bets had triggered the review, even emailed customer service trying to get un-restricted. All of this was wasted energy on outcomes that were inevitable and impersonal.
The right mental model - which I only arrived at maybe nine months in - is that bookmaker accounts are depreciating assets. Every one has a finite useful life that ends when the book decides you've taken too much value. The goal isn't to avoid the gubbing indefinitely, because you can't. It's to extract as much useful value as possible during the account's life, then move on without emotional residue. The limiting piece explains the business logic in detail.
I should have started tracking CLV on day one
I started tracking CLV properly around month four. For the first three months I was just tracking wins and losses, which meant I had no real way to tell if my process was working or if I was just getting lucky.
Month two had a brutal losing stretch. I spent two weeks convinced my model was broken and on the verge of stopping. If I'd had CLV data, I would have seen that my picks were positive-CLV and the losing streak was pure variance. I would have kept going with confidence. Instead I nearly quit because I couldn't tell the difference between bad luck and a bad process.
CLV isn't optional. It's the primary metric. The CLV guide is the single most useful piece of writing on this site if you're starting out. Start tracking the moment you place your first bet.
Arbing is easier than +EV, +EV has more headroom
I started as a pure arber. Pure arbitrage has the advantage of deterministic returns - every executed arb locks in a guaranteed profit, no variance. That certainty is emotionally valuable when you're new and unsure of yourself.
The problem is that arbing has a low ceiling. Per-arb margins are typically 1-3%, execution is operationally demanding, and your account lifespans are shorter because arbers are the easiest sharp pattern to identify. I hit my per-month arbing income ceiling within six months.
+EV betting has higher variance but a meaningfully higher ceiling and longer account lifespans (you're only betting one side, which looks less obviously sharp). My month seven onwards I'd begun transitioning, and by month eleven +EV was producing more dollar profit than arbing, from a similar level of effort.
If I were starting over, I'd learn arbing first (for the certainty and the immediate cashflow) but begin transitioning to +EV by month two rather than month seven. The arbitrage guide and the +EV guide explain why. The six-months arbing piece is the story of what happens when you arb-only for too long.
Player props are more valuable than I realised
I spent the first six months betting mostly H2H, line and totals - the three main markets every bookmaker quotes. My CLV on those was fine but not spectacular, because those markets are heavily traded and efficiently priced.
Around month seven I started seriously engaging with player prop markets - AFL disposals, NBL points, NRL run metres, NBA assists. The prop markets are priced by smaller teams with less sophisticated models. The cross-bookmaker dispersion is double or triple what you see on main markets. My average CLV on props across the remaining five months was +6.2%, compared to +1.3% on mainline H2H.
Player props are where the durable edge is for retail-scale advantage bettors in Australia. The NRL props analysis goes deep on NRL specifically. The equivalent logic applies to AFL, NBA and NBL.
I should have opened more accounts, earlier
Fourteen accounts felt like a lot when I started. By month six, after half of them were restricted, it felt like almost nothing. If I'd opened 18-20 accounts in the first month, my operation would have had much more runway when the initial gubbing wave hit.
The friction of opening a new account is real - ID verification, deposit, initial turnover, learning the interface - but it's front-loaded. The long-term value of having the account available is enormous. Open aggressively, fund modestly, use the first weeks to get through the deposit matches, then settle into steady usage.
The AU bookmakers tier list covers which books to prioritise and in what order.
I ignored Betfair Exchange for too long
I opened a Betfair account in month three, looked at the commission, got confused by the exchange UI, and barely used it for the next six months. This was a significant operational mistake.
Betfair is structurally different from the corporates. It doesn't limit winners in the conventional sense. It allows lay betting. It runs in-play markets. The commission is a real cost but the features it buys are genuinely unavailable elsewhere in Australia. By month nine, roughly 30% of my betting volume was going through Betfair, and my overall operation was more stable because of it.
The Betfair defence piece is the case I wish I'd read on day one.
Multis were a silent tax
I kept placing small multis “for fun” through most of year one. When I finally calculated the total I'd lost on multis - after separating them from the sharp activity on the same underlying picks - it was $3,400 over six months. The same picks as singles would have produced a small profit.
Multis aren't entertainment. They're a compounding tax on your bankroll that you're paying for the feeling of potentially bigger payouts. The maths is unforgiving. The piece on multis has the calculation. I haven't placed one since.
The emotional volatility was worse than I expected
I thought I was a stable person who could handle variance. Twelve months in, I've revised that opinion downward. Specific experiences of betting through a drawdown - the 2am spreadsheet audits, the irrational certainty that something is wrong with my model, the temptation to just press pause on the whole operation - are more intense than I would have predicted.
The things that helped, in order:
Pre-committing to bet sizing rules before drawdowns hit, so that when they hit I didn't have to make decisions in emotional conditions. Writing down the rules for what I would do at -20%, -30%, -50% bankroll loss.
Trusting CLV data over gut feeling. If the CLV was positive, the losing streak was variance, regardless of what my brain was telling me.
Not talking about my betting with people who didn't understand advantage betting. The conversation with my mate who heard “I'm down $2,000” and concluded I had a problem did more damage to my psychological state than the $2,000 did to my bankroll.
The eighth-Kelly drawdown piece is the closest I've come to writing about this honestly.
The money is real but smaller than it looks
Year-one net profit: $12,100 on $4,800 starting bankroll. That number looks large until you break down the time I spent - probably 600-700 hours across the year, including reading, account management, placement time, tracking, system-building, and the hours lost to emotional volatility. Effective hourly rate: around $20, which is below many legitimate Australian jobs.
This isn't a discouragement. The returns scale non-linearly - year two with a bigger bankroll and established infrastructure should produce meaningfully better hourly returns. But advantage betting isn't a shortcut to wealth. It's a skill-intensive side operation that produces modest returns to patient practitioners. Anyone selling it as life-changing income is lying or delusional.
The meta-lesson
The single biggest shift between month one and month twelve was the shift from results-focused thinking to process-focused thinking. Month-one me tracked wins and losses, celebrated the winners, rationalised the losers, and made tactical adjustments based on recent outcomes. Month-twelve me tracks CLV by bookmaker by market, adjusts sizing based on documented variance, plans account lifecycles in advance, and doesn't emotionally react to individual results.
Month-twelve me makes more money with less anxiety. The shift is psychological more than tactical. You don't get to month-twelve thinking by reading about it. You get there by going through month-one thinking, making the mistakes, and iterating. Which is why this piece is a letter, not a lesson plan. If I could have handed month-one me this document, he'd have read it, agreed with the ideas, and still made most of the same mistakes. Advantage betting is learned experientially. The value of writing it down is to accelerate the learning by a few months, not to short-circuit it.
Year two starts now. The goal this year is steadier sizing, deeper prop-market specialisation, earlier rotation of accounts that are approaching restriction, and less emotional volatility in the drawdowns. Ask me in twelve months whether I got there.
David has been running advantage betting strategies across Australian bookmakers since 2023 and contributes long-form retrospectives, case studies, and operational pieces drawn from years of running real bets in AU markets. His writing focuses on the realities of running a sustainable AU advantage operation — what works, what fails, and the operational details most blogs gloss over.