The snap weight trolling system allows you to fine tune your trolling spread and depth without having to use excess line to reach your desired depth. The clip on weight system relieves you of having to use a heavy downrigger, but still get your lures at greater depths. The deep water kit is intended for to reach greater depths without having excess line out. In order to use the snap weights, just let your lure out a 20+ ft, and then clip on your weight and continue letting our your lure until you have reached your desired depth. When retrieving the lure, just unclip the snap weight and continue reeling in your fish! Our snap weight kit can be used with or without trolling planer boards. Planer boards for fishing help spread your lures out, covering a larger area when trolling.