I agree with PABowhntr, increasing your draw weight will gain you a few fps, not enough to make much of a difference in impact point or trajectory but you will gain Kinetic Energy but if your comfortable at the weight your at, at the expense of accuracy, I wouldn't change a thing.....

There are multitudes of ways to increase speed, with the exception of extremes, most are only a few fps here or there and you'll sacrifice the bow performance...stick with what you have and be as accurate as you can be....it comes down to judging or ranging your distance and hitting your mark regardless the speed of ones bow.