I have an Alumacraft 2004 TP175. I can't imagine NOT having to yank the floor out to fix my front well - but it looks easy (tiller).
OR maybe you have an adjacent compartment that is accessible? Drilling out rivets and replacing them is easy peasy.
But you should make sure it's up under the...
Yep. A few years ago I was scouting for a spring walleye fishing spot on Devils Lake and found a creek that was filled with BIG suckers that were spawning. Made me hungry thinking about canned sucker (which tastes like canned tuna BTW).