Haste isn't useful for SV hunters either. You might want a little bit of it but stacking is a waste. You get more benefit from having a little ArP to boost your Auto Shots and Aimed Shots.
I also noticed my dps went up once I replaced the fishing rod with my polearm. I must done 50% of level 78 with a freaking fishing rod. Hunters are truly hard to master, but I'm getting there.