Pretty much every skill position on offence (bar the QB) will sit out a number of plays. Most teams will split RB carries to differing degrees, using bigger lumps at goal line situations. Always good value there. Also, full backs are generally used for blocking purposes, but will get one or two touches per game on short yardage plays - quite handy for touchdowns - see Kyle Juszcyzk for the 49ers, for instance. For WRs, as the season progresses, track how defences measure up vs slot receivers - these guys tend to be the 3rd choice WRs/speedsters for most teams, so will have longer odds, but be handy against defences who struggle in the slot and yards after the catch and/or have a shutdown corner on their team covering the offence's top WR(s). Also look for offences who deploy 2 TEs regularly on short yard goal line plays. Buccaneers, for instance, will always have good value for Cade Otton/Ko Kieft on TD scores - particularly if defending corners covering Evans and Godwin are solid