Originally Posted by MNtraveler
Are you putting on electric AND gas heat? That helps recovery time.
The OP stated propane only water heater.
OP, Teach them how to adjust just enough hot water to get flow. Then turn on the cold and adjust to temperature. After wetting down, shut off the shower head slide valve while they soap up. Finally, turn the shower head valve back on and rinse. Done.
The kids that ignore the instruction simply take their shower last. This is what works for us. My wife is usually last.
In other words, I believe there would be no benefit.