Possibly, but it is just another area of the hull. I don't know how 4 cubic feet of water could make much of a difference when it is coming in at that rate! Otherwise, we would not be alloed to have V-Berths and stuff. If the pod is bolted and secured properly, it is no different then any other area of the hull. There is nothing in the standards that I read stating the hull must be one uniform piece of the same material. It is very common to add on hull extensions using fiberglass, which is basicly "glueing" it on.