Yep. Brew in a bag with the lid to heat the water, up the mash temp when it needed it and then do the boil. It means I could insulate the fermenter with foam and bungie cords and not have to change anything for the entire run.
I did try leaving the induciton on at 100 watts but it was actually raising the temperature. I'd love to be able to do some recirculation but I don't have a pump yet.
So I finally got around to giving this a go. It seems to work very well. Any tips on keeping my stainless steel plate still when it is coming up to a boil. It's flapping about all over the place.