When evaluating the viability of an arbitrage bet, several key factors should be considered to ensure profitability and minimize risk. First, it's essential to compare the odds from multiple sportsbooks accurately, looking for significant discrepancies that create a favorable arbitrage opportunity. Additionally, the size of the stakes or the amount you can bet without triggering bookmaker limits or suspicion is critical; larger bets can yield higher profits but may also attract unwanted attention. Transaction costs such as withdrawal fees, deposits, and any potential commissions on winnings must also be factored in, as they can erode profit margins.