I'm more HI tech that old tight wade RdFX and use a tension tester. I don't know if Boggy carries one or not. Mone is a Sullivan tester.
I like this type tester because I know what poundage it fired...3 lbs, 2.5, 2.75, 3.25 etc., this , to me, makes final tweaks easier. As for poundage I set my traps two ways my smaller 1.75 and #2 rd jaws are set pretty close to 3#. My large traps , that I use screen covers are a bit lighter, around 2.5 pounds. These setings tend to exclude all rabbits and rats, most fox and give good pad catches on the cats and coyotes.