Actually the most useless piece of fishing equipment in my boat is a set of scales, for tournament fishing you don’t need scales after you start culling fish you need a balance beam, it’s more accurate. As for the gimmicks their are alot of them out their and most of the ones you see them really pushing on tv are a joke although they may catch a fish. If it sounds too good to be true it more than likely is a gimmick. On the regular top fishing shows they are selling a product and some of them work. Some you baits like spinnerbaits, jigs, and crankbaits need some fine tuning or you may be their all day trying to catch a fish. I probably have a bait for almost any place in my boat for catching largemouth and smallmouth bass.