Has anyone ever added or attempted to add some sort of heater directly to a Coleman/ Gott/ Rubbermaid type mashtun? I really love my 60 quart Gott and thought I'd make a HERMS unit for it to do more step mashes or have absolute heat control through HERMS recirculation, but now I really think I'd rather try to modify my Gott if there is a practicle way of accomplishing the install. Whatever type of heater element is used will obviously need to be electric and it WILL be controlled by a PID w/ SSR. Part of the criteria is for the lid to remain closed for the duration of the mash, so heat sticks are out . . .
I'll entertain any ideas or happily look at pics!