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Join Date: Jul 2008
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Not sure what to tell, you. This is what I would do, but I haven't tried any of this, since I can wait for spring to paint...
How about setting up a tarp enclosure and using clear plastic for the south facing side? Let the solar energy in. Also use 2 layers of tarps on the top and 3 sides, and 2 layers of plastic on the south side. Get some bubble wrap and scatter peices of it between the 2 tarps. (Even 1 inch squares cut from sponges, when glued onto the bottom tarp every few feet will work wonders. Put glue on sponge squares and throw them up onto the tarp. Wait until glue dries before adding 2nd tarp.) Now you've just created a somewhat insulated, solar heated enclosure. It should be good for raising the temperature a few degrees to help get you the 50 degrees mark.
If there are outlets you can use, set up a bunch of electric heaters, but watch out for rain and puddles. Be ready to unplug it all at the first sign of rain or when leaving the site.
Between a solar-heated, crudely insulated enclosure and some electric heaters, you ought to get a decent increase above outside temperature. Save the tarps for the next time you want to cover the boat.
We had a wedding reception at our house with a big huge tent. Small heaters did make a difference in the inside temperature. So it can be done.
Not sure if sanded paint particles are flammable, but some things in particulate form are explosive, so you might want to be very cautous overall about using flame-based heaters. Others on this site would know more about that. Also, not sure what to tell you about venting.
Good luck, and whatever you do, post pictures!
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