✦ Arbitrage margins typically 1–3%✦ Place harder leg first✦ Two-outcome arbs are faster to execute✦ Lay commission affects profitability✦ Soft bookmakers move lines slower✦ Always calculate stakes before placing✦ Free bet value: ~70% extractable✦ Arbitrage margins typically 1–3%✦ Place harder leg first✦ Two-outcome arbs are faster to execute✦ Lay commission affects profitability✦ Soft bookmakers move lines slower✦ Always calculate stakes before placing✦ Free bet value: ~70% extractable