whats the WAG, i mean its just depends what type of fishing your doing, if your using tag lines to pull lures for marlin, then yes u should use a scale, for most other practical uses of clips just hand test them with line through clip[, but the reason we set balcks clips when using tag lines for pulling lures is that on our boat we want the clip to release the line at 15lbs of pressure with large lures for blue ones mainly, and 8lbs for small lures(whites and sails), u essentially want the fish to be hooked immediately at strike with lure with j-hooks, for tuna fishing with ballyhoos u want the release clip set so tight ht e thing is hooked before the clip releases, the same idea should be employed for using outriggers and pulling parachutes and umbrellas for rockfish, u want the clip set tight so the fish is hooked before the clip pops, these lures have weight and two hooks usually, so there is no real use to a drop back bc u will lose more fish, the riggers just help keep lines from tangling and spread out further obviously, but the dropback does not really an advantage here. I check the clips with a drag while marlin fishing lures daily or even a couple times a dayto make sure they are at the right setting, the first reason being that i want the best chance i trhink i have for hooking fish, the second reason (much more important than the first) is that i do not want a clip that will not release under a substantial amount of pressure which say for example a blue marlin piles on the long rigger and the clip is so tight that it folds the rigger before the clip breaks. I worked on a boat in hatteras and a previous mate on that boat who was considered one of the top rated mates in the world got lazy and had this happen to him. But If i were you and was planning on setting clips real tight I would scale test them first and fiind out what best suits different types of fishing, if using a medium or light setting just use your hand and your touch