Shop Heat

Radiant is nice, but i dont find it as effective as in floor type radiant heat.
Theres 100’s of ways to skin this cat,wood heat is the cheapest but is labour intensive. Pellets, the burner costs lots for a good one,100,000 plus btu’s .
Containing it is the biggest thing.
Check your local buy and sell for insulated tarps.

Remember, plastic/nylon tarps are flammable, stuff can go bad quickly. Take care and have extinguishers handy. Better safe than sorry.

Open flame type appliances need air intake minimum 2 feet off the floor. Just made a stand for my buddy’s woodstove.

For me, I think propane is the best and cheapest option in the long run.