The foam Tracker uses in their boats will hold water like a sponge, just took out some foam in 1448 with a friend (his boat) and we had about 100 pounds of water in the foam, just squeezed it out like a sponge, not what I call a real attribute to being built like a tank, many of their hulls are .100 gauge if that so not sure what type of tank your referring to but it ain't a Tracker, lolThe Trackers are built like tanks. From what I could tell they are using a thick layer of foam between the hull and sides. Perhaps the foam adds some structural value but, I think this is also one reason why they are so heavy. Floatation is important but, it seems like they went overboard if they are using it only for flotation.
Jeff, do you have any idea what your 60/45 2 stroke weighs?