. Spend time on the different sites for few days, analyse the odds before the start and end of the games, then start betting in small amounts, and. If that wasn't enough for you, this combo bet has seven different selections. If there are seven games on the NFL schedule, the line may be set at Lucky Four sides create four single bets, one four-leg parlay. from a £6 Lucky 15 bet. These parlay bets paid big! Take a look at our favorite longshot NFL, CFB and MLB wagers with 8 to 15 legs that returned big payouts. – Seven bets covering different permutations across three selections Lucky 31 – 31 bets covering different permutations across five. The overall wager is made up of separate bets, with 21 double.