One way valve on hot water in shower

I tried most of the “All you have to do is just.........” suggestions given here, with very little improvement. I say “most” because when you dry camp as often as we do, and only have a 30 gallon fresh water tank, dribbling the water works against our need to stretch every resource needed to extend our stay.

What finally fixed it for me was a Thermostatic Shower Mixer Valve.

:):)