I have a buddy that has a Weldcraft Renegade Jet Boat. He has a Terrova on it. He swears the spotlock won't work on a jet boat. I just can't believe that. I had a Terrova on my Crestliner and it always worked great. I now have a Garmin Force and it works great too. I know with the Force there is a "Gain" setting to adjust the sensitivity for the "Anchor Lock". Is there a setting like that on the Terrova? He says when he hits the Spot Lock the boat just coasts past his spot and really never sets up. It just kind of wanders I guess. He can't use it for jigging at all like over deeper water for Lake Trout. I just hate to see him not able to use that really important tool! I would be lost without mine!