I have some boat building questions.

first (not a question) from what I understand it takes many weeks for a boat to cure/set up after the glass and resin have been layed.

When the glass and resin are curing is it like concrete? Is heat created during the process? If so, would sticking it in a refrigerated room cure it quicker without compermising the strength? Does vacuum bagging help the curing process or does it just allow less product to be used? Vacuum bagging looks like a simple process (I know nothing of it) so why aren't all boats bagged? Esp since it possibly allows the use of less glass and resin. Not sure if im asking the right questions but im sure ill get thr answer im lookin for.

So which is better (if any are over the other)?

Ambient air temp cure? Would heat speed up the cure? Would a 45 degree temp room be better/quicker??