have always had trouble generating enough power when shooting beyond the arc. anyone have tips?
single arm shooting drills are importing.. do you do them? they will also help with what LBSS mentioned, using your hips more... but they also improve your 'arm + wrist flick' which is where you can get a ton of power on your jumper - ie the follow through.
it's basically just shooting 'set shots' with one arm from various places on the court. you always "start right under the hoop" then work your way out.. achieving proper release from AT LEAST the free throw line is important. If you build enough power to easily shoot freethrows using this form-shooting drill, you'll have enough power to shoot threes, that's for sure.
edit: and then of course simply taking more shots, with good form, from as far as possible.
this drill can be done with the guide hand down at your side .. it can also be done with the guide hand in 'position' but not actually touching the ball.
also, this is perhaps the best drill to warmup for games/shooting etc.. I would always just warmup with ~50 or so single arm shots from pretty much right under the basket .. making sure my hips were square, using my legs properly, shooting arm is an L, extend completely through the shot while flicking the wrist.
the best warmup to "wake up your mechanics", IMHO.
pc!