Originally Posted by RoyBraddy
I drain mine down just using the low drain points and open the spigots inside the trailer.. This leaves an inch or so of water left in the hot water heater.
This is the quickest and easiest method, with the least wear and tear. I learned the hard way about not draining after every trip. Wife got sick during our first pregnancy and cut our season short. Didn't get a chance to drain the water and got the rotten egg smell.
Now after every trip we open the low point drains and the bathroom faucets. I also open the pressure relief valve on the water heater to drain the water. By the time we get home, all the water is drained out. I close the drains as part of cleaning out after a trip.