This is my second year using a 55 gallon drum evaporator and I'm already planning for next year to improve evaporation rates. I'm curious what other folks with 55 gallon evaporators are getting for rates and what have been the best modifications. Basically, I'm not looking to drop the money on a hobby evaporator to make 3 gallons a year, so what can I do to my set up to get the best boil rate? What modifications are the best bang for the buck? I'm currently getting around 3GPH with a 24"x18" pan (flue on top of barrel) and no modifications, I would like to get to 10GPH or better. I was thinking of adding AUF and moving the flue to the rear of the barrel so that I could add a new 2'x3' pan. Also my current pan is 1/16" or 3/32" which seems to take way to long to get boiling so I would like to go with 20 or 22 gauge.