I guess it really depends on what you want to accomplish. If the purpose of 3D is to prepare you for hunting, then the advice above is great. Woodchucker's advice about slowing down is great, period.
However, if your purpose is to score as high as possible in 3D matches, then get the gear that will do that for you. Also, add one thing to Woodchucker's advice: not only slow down, but let down. If something doesn't feel right at full draw, then let down. You can't always do that in a hunting situation, but you can in a 3D situation.
Since I started shooting my Hoyt Satori, I notice an absence of compliments from my friends when I make a good shot. I'm encouraged to shoot last on roving targets, and when I shoot 3 4's and one 5 (bullseye in our scoring system) from 30 yards, I get a "ho hum."
If you want to max out your 3D scores, shoot a 64" recurve at the maximum weight where you can shoot 100 shots a day without tiring. Shoot one with tunable limbs (ILF) and shoot the lightest arrows you can tune for it.