I switch power between stb side downrigger and scotty trap puller, 30 amp fuse. String of two Bauer 24" traps with 5 lb lead in each, plus 8 lb weight before traps and another 5 lb after. Haven't popped a fuse pulling traps, but as others have noted, positioning the boat to pull vertically makes a big difference in retrieve speed. Drift makes a big difference, the drag of the traps through the water is serious. Plus you're retrieving fewer feet of fully loaded rope if you use engine power to keep the boat over the traps.