Dan,
Your point is well taken. IMC is not an issue with our towplane and I am never more than 10 minutes from home.
I did learn something interesting about operating with no electrical system though. After the CB had popped, the rest of the flying was done with the Alt field OFF and Bat ON only when required, and a hand-held radio. What was interesting was how much of normal operations requires electricity - with the Master OFF, no electrical gauges were working and the flaps were not working. I deliberately didn't lower the flaps anymore than required for the glider tow, in case I couldn't get them up again. Also of note was that the EDM engine monitor shut down due to low voltage, well before any other equipment stopped working.