My only thought on that would be could your grill handle all the weight on one side? I have not gotten a pressure canner due to glass top stove and lack of other heating options. I did a lot of work getting a pot and rack that will fit on my stove top and heats to boiling with out cracking the top or tripping sensors. I think this time round I will use my propane burner for the turkey fryer. I would love to have an outside kitchen in the garage with a propane set up. On my list of to do stuff.
Well I do use that burner on the side of the grill for the full water canner when I don't want to use the big burner. ( If the propane is on the grill and I don't have the energy to move it) I do 99% of the actual canning outside, and prep inside, it is so much better than having that heat in the kitchen. Some people that do a lot of pressure canning had said that I shouldn't use it on the big burner though because those can't be turned down far enough to get the right pressure. I guess I should just give it a try on the grill burner and see if it works. I really hadn't thought of using that burner because I do usually use the big one. So thanks for getting me thinking!