Thanks!
As long as you don’t apply targeted pressure, the foam seems to hold up perfectly. It’s really tough material when you approach it as a whole surface. I could clearly tell when I reached my max. clamping pressure as if I was clamping a hard material.
As a matter of fact, I just went and bought a new sheet of foam to make the next iteration.
I want the next deck to be wider (this one’s really too narrow for my taste), with more outspoken concave (which should make it stiffer) and a smaller radius between the flat middle section and the tail/nose. I’ve measured the tail drop and it was 21.6° vs the mold’s 22° so it hasn’t moved as much as I thought it did. 0.4° of drop is really not bad at all.
I’m not really interested in making an aluminium board I won’t use. I’ll find another project to challenge myself to that regard 
