thanks Latman,
so would the foam core not drain/dry out eventually if some holes drilled in the tail and stood upright?
what about EPS waterproof foam?
not all moisture will leave, some will remain. but it must be dry enough for the epoxy resin repair patch to stick.
I have heard about "waterproof" EPS but I am yet to see it , If it does exist i wonder what its density (weight) is ? Regular old Urethane foam does not absorb water bit is too heavy really for big SUP boards IMO