I've used Stan Sloan's black lights for years. I rigged mine up specifically for use in my old Tracker because of the thin gunwale. First I riveted two L-brackets to the bottom of the light. Then I bolted a 2" spring clamp that you can get at any hardware store to the other leg of each bracket. Now all I have to do is open the two spring clamps, slide them over the gunwale, plug it in and I'm ready to go!