Serial No XTC36818M815…. Looks like a 5 on the end. Picked it up in Corpus Christi TX from a kid that had used it as part of some type of oyster research project in the bays. Probably explains the damage , front and back, on the bottom from sliding up on shells which can be very sharp. Researching repair suggestions for bottom damage so open to ideas. I don’t think the cracking on the inside bottom is of concern? Any help is appreciated. Thank you.