Just thought I'd share a technique I used for the first time during my last brew session.
The technique involves maintaining your mash temp using a hot or heater rod. I acquired a 1000W lab grade glass heating element, in the shape of a long 1/2" tube. When I noticed my targeted 154F mash temp fall below 151F, I thought I'd try using the heater rod to heat the mash back up by continually stirring the mash with the rod until the mash temp came back up to 154F.
I did this twice in the 60 minute mash in, and it worked great. Took maybe 5 minutes of stirring each time.
So I'm going to continue using this method to keep my mash temps more consistent and hopefully more efficient due to the stirring.
This will definitely do until I go herms or rims...