March, 32, scored three tries in 17 league appearances last season as Hunslet finished in seventh place, although they were some 16 points short of sixth placed Halifax.
Keighley and Swinton earned promotion from Championship 1 last season, which means the league will operate this term with 10 teams.
March said: “As a group of players, we’ve talked about it, and it’s our goal to reach the play-offs.
“If you don’t have goals, you don’t strive to achieve them. We’re looking forward to the challenge, and we’ve got a lot of players with a point to prove.”
Hunslet open up their league campaign on March 11th with a trip to Halifax, before they host Sheffield on March 18th.