Water Heater....leave on or as needed?

MarkTwain wrote:

blackcows wrote:
Do you leave your hot water heater on when camping or on and off as needed?

Turn it on and leave it on! 1 person can use 4-5 gallons of heat water per shower, so the rest of the family will have to wait for your water heater to heat up the tank again:( The savings by turning off the heater after your shower is minimal but the inconvenience of waiting for hot water is maximum.

Well that makes me a bit nervous. I only have a 45 gallon tank and 3 ladies that shower. I guess I need to be more worried about water than Propane ?? Most of the horse shows we go to have electric but no water so we only have the water we haul. Guess Propane is the least of my worries.