Sounds like you need to install a timer switch and that would solve the problem......your problem is similar to one I had the only time I ran it without a timer switch.....kayak filled up with a ton of water in soupy conditions and sank.....never had water issues prior to that.....I requested to Malibu that they put a warning label on the bait tank that sits inside the XFActor kayak, that they shouldn't be ran without a timer switch......but it sounds like they need that warning for all the sit inside bait tanks. The guy at Malibu said that they aren't designed to run without a timer and that he knows people run them without a timer switch....and that me losing over $4000.00 in gear wasn't a manufacturer issue.....so our differences in opinion continued and I just requested they put a warning label on it to give people a heads up and help prevent some accidents