Read every post ever written on this site by Ryan Ma and understand how he analyzes the numbers game in Fantasy hockey. Sure you may have a hunch, it might be great, but consider that the tipping point in a balanced fight. To make sure you stay in contention, the only true consistent approach to is to follow the numbers.

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10 Team Yahoo Roto
Keep 6F, 3D, 1G (to max 4 years)
4C,4LW,4RW,6D,2G,5BN,2IR Roto-play 90games/position
Player: G, A, +/-, PIM, PPP, SHP, GWG, SOG, FW
Goalie: W, GAA, SV, SV%, SHO

C: 3-Backstrom, 1-Getzlaf, Kesler, Ribiero, Stepan
LW: 2-Zetterberg(c), 1-Hall, 2-Benn(c), Pacioretty,
RW: 1-P.Kane(c), Wheeler, Burrows, Brunner, Silfverberg
D: 2-Edler, 1-Yandle, 1-Subban, Carlson, Zidlicky, J.Faulk, Souray
G: 2-Quick, Brodeur, Dubnyk, Emery
IR: Malone

#- denotes number of years I have kept a player.