I use 100 ft camo P-cord + 200lb leader, about 6-10 ft long. I put a swivel between the P-cord and the leader material.
To rig the bungee: In line on the P-cord I tie a girth hitch around the hook of a bungee, grab some slack and tie another girth hitch around the other bungee hook. The idea being that the bungee takes all the load and there's a good belly of slack in there before the P-cord goes tight during a strike. If for some reason the bungee breaks it's no big deal, because the P-cord (tied off to the stanchion) will ultimately take the load. We troll various Hopkins type lures (barracuda like these), stretch diving lures, and skirted lures of different colors. Stretch lures don't like going over about 4-5 knots. Cuvee will easily blast along at 8-10 knots, which is waaaaaay too fast for trolling. Even the 7-9 knots on a Helia 44 is too fast. You'll need to shorten sail to troll the right speed.