I have a 1974 WesCraft Mustang (which is basically a Glasstron v-156). I am doing stringer/floor restore and I have found many cracks in the hull which I have repaired with fiberglass. What is the best way to test a boat for any leaks that I am not seeing? I just want to make sure there are no other cracks before replacing the stringers, foam, and floor. I have heard to fill the boat up with water but I just fill uneasy about that and I would like opinions on the best way lol.