With regard to Prusik knots and clips, David Lennard came up with a system to use the prusik knot but use a short lanyard with a stopper ball on the end of it on your spreader harness. Instead of a clip, you just slip the open loop of the prusik over the stopper ball and put a little tension on it. They stay in place remarkably well and are easy to get out of even under tension.
Our version of this is to tie the short lanyards with stopper balls to the trap ring. Downside is that there is more crap hanging off the trap gear.
