The overall wager is made up of separate bets, with 21 double. 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. – Seven bets covering different permutations across three selections Lucky 31 – 31 bets covering different permutations across five. . 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. from a £6 Lucky 15 bet. If that wasn't enough for you, this combo bet has seven different selections. 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.