For a drain, here's an easy option. I just put a 1/2" Nylon nipple in, and put a hose with 1/2" x 3/8" fittings I think, and pex stop valve on the end. Makes draining easy. Hose is just one of those like under kitchen or bath sink in your home, so it'll handle the hot water. I still remove all this every now and then to rinse the tank out with a tank rinser, but the drain hose makes things too easy, especially since I drain it every trip, in the shop, into a bucket.
John and Rebecca Dickson
Emma-8 / Little John-5 / Iva-1+
2013 Ford F-350 Lariat FX4, CC LB PSD, DRW
2015 Jayco Jay Flight 28BHBE (#8)