How do you trap rig?

[Iceman]

Tie a snell knot with your j hook, leaving a good 6+ inches tag, then tie your trap hook, treble with an improved clinch or whatever you prefer. 3 way swivel for 40+ feet with a torpedo sinker, less than 40 swivel and Carolina rig
Hook the trap near the anal fin, usually hook em just behind that. Hook sizes depends on the baits.