You loose lots of cooler space if you insulate from the inside, I wonder if there's a way for you to pour insulation foam on the outside of the boxes walls and insulate those nice size fish boxes.

I have a CeC which has a non insulated fish box on the forward deck and the livewell which is not insulated either. I can't see how it would be possible to insulate the outside of my boxes/livewell without cutting the deck and undergo major surgery on the boat.

Has anyone done this before?

livewell
 

bassarama heres my livewell i used an old brining tank fron an old water softener cut it down to size and put the lid back on with hole cut out of lid and glassed it in still needs painting and plumbing done also i put another piece of plywood under seat that fit in the hole to cut down on the splashing,hope this helps some.

Looks good, I'm sure it'll work like a charm.

I need to do the same thing to my 30 gl oval shaped livewell, insulate it and finish it with fiberglass like yours!

Thanks for the pics