Using a shower head that aerates the water (Oxygenetics?) is a big help, but it still will NEVER allow a traditional "house-type" shower! We never have the water on full power. Turn the hot water on until there is just enough pressure from the shower head, then a small amount of cold water to make the temp comfortable, then turn the flow down even more until it's enough to do the job. It's not the place to massage your back with a waterpic shower massage! DH and I have always allowed for recovery time between showers, and neither of us is ever 'under water' for more than 5 minutes tops. Long hair, shampoo and conditioner? Make sure your shower head can be turned off while doing each step. Get wet, water off. Lather up, water off. Rinse off, then you're done! Another post was also right about warning of moisture and mold. Make sure exhaust fan is on and roof skylight is open to allow steam to escape. We once had severe mold problems from moisture that never had a chance to go anywhere in our RV bathroom. Bottom line, even with endless hot water there are considerations and accommodations that have to be made in an RV. Gray water holding tanks fill up very fast from a shower! Can't always guarantee a sewered site!