RE: Draw weight
One of the big problems with bowhunters, is that they choose their draw weights arbitrarily. Draw weights should be chosen to match the arrow spine they're shooting. I'm not talking about the wide range a manufacturer recommends their arrows for, I'm referring to the actually poundage that perfectly matches your arrow's dynamic spine.
I have several bows, and I shoot anywhere from 50 to 75 lbs, depending on the arrows I'm using with a particular bow. Each bow is set at the exact poundage that shoots that arrow it's best. On one bow with a particular arrow it's 63 lbs. Another arrow (out of the same bow) is 71 lbs, and so on.