Posted by mtown on 08/19/16 - 7:26 PM
#4
Calcium chloride will absorb water from the atmosphere. The only proof it is getting water weight from the hull is to weigh the hull before and after.
As for removing the foam down to the bottom, you will be dependent on a 1/8" thick layer of not great fiberglass in the event of an impact on the bottom. Whalers are not strong because of the lay up of glass, it is the solid backing of foam that make them stiff.