1 - To dump heat and humidity.1---smoke with the door open?
2---smaller burner?
3---some sort of baffle arrangement?
4---saw a hole in it and feed more air?
5---forget about propane. Stick a hot plate inside to get the wood chips smoldering?
6---spend another fifty bucks for that "Amazin" gadget?
7---separate the smoke generator from the smoker cabinet with a long length of stove pipe or downspout pipe? (Build some sort of smoke generator to hook to it)
2 - It's still gas
3 - See #2
4 - See #2
5 - Now we're gettin' closer.
6 - Ding, Ding, Ding. We have a winner. (On sale now)
7 - Too much work and interrupt my beer drinkin'.
BTW, when propane burns it PRODUCES moisture. Not something you want to do. Think DRY heat.