+1 on offset jaws and minnesota trapline products. whenever we modified our traps it was jaw add-ons and baseplates. Made the traps heavier and much more sturdy. they were welded on, I dont have any experience with the riveted stuff, probably would work just as good though. Be sure to check your regs for the maximum jaw width you can use. We were limited in NY so we put the jaw add-ons on the inside of the jaws instead of the outside, made the trap legal. neat little trick.