Building a temporary enclosure for working in cold

[TMala]

I am new to the site, I will be doing some work to my 69 20SF over the winter here in NJ. I plan on new transom at 27in, console work, swapping engines.

It would be nice to finish fiberglassing before next boating season and it will keep me busy in the winter. I am toying with the idea of building a temporary green house style enclosure and using a portable heater so I can fiberglass on nice days. Is this a crazy idea or would it possibly work? Anyone do anything like this before?

I see online I can get 6 mil clear greenhouse plastic 30ft X 50ft for about $150-$200, then I just need to frame out a temporary structure. The big thing will be trying to get it get around 70 degrees for resin to set when it's 40 out.

I also saw others have bought car port enclosures and things like that, but I really only need this to last from December to May and I would like it to be clear as on real sunny days it will help a lot with heat.

Thanks in advance for the input!

-Tom