I am a new to me owner of what I believe is a 1970 Glastron V 176. I have replaced the floors. Still need to recarpet it, re cover the seats and check out a couple other things, but I have a question. I don't see a bilge pump in the boat. There is an area in the back that appears to be circular in shape but is filled with foam(actually has two empty cans stuck in it) could this be a bilge area? Do I need to just remove that foam? Any advice would be great