I am starting to appreciate that once the hull is all glued together and still inverted a couple of 100 watt light bulbs carefully placed under it would maintain a big warm air space - IN the hull.

What I'm trying to think through now is how to glass that warm on the inside, but cold on the outside, shell.
Wood itself is a good insulator, even 1/4 inch thick wood, so I don't think I can count on the bulbs under (in) the hull to warm the boat bottom while I do the wetting out, or even just after that when I add a plastic tent.

So, will I need another heat source ABOVE the hull to keep the boat bottom warm ?
If so, what suggestions do you have for making this a gentle and even heat ?
Other than heating the whole work area, which is impractical.
I guess I'm worrying about getting cold spots and hot spots.

tnx,

Reg