Here in NH we can't use livewells unless it's a sanctioned bass tournament. I also do a lot of fishing in Maine where a livewell is even less useful- you can't possess live fish at all. If I ever get around to doing a complete overhaul of my boat, I am going to eliminate my livewell as it takes up a lot of space and ends up just being a catch all for junk. Until then, I'd like to make it into a cooler. Anyone done this? Just take some rigid insulation and line the thing with it?