An octopus prop bet specifically requires a player to secure the ball in the end zone on both the touchdown and the conversion. An octopus bet in football can cover a quarterback, but they would need to actually run the ball in themselves before also running in the conversion.

Arbitrage is when you can place two bets on the same sporting event and guarantee a profit regardless of the outcome. This is done by locating odds on both sides of the event that enable this. You will generally need to place one bet on one top online sportsbook and the other on another.