I removed my spare from the rear position because I put a tool box for storage of our 12' x 12. canopy but then the spare would be in pickup bed which i did not like , We have removed all the propane, and use electricity for heat and cooling. the battery I moved under front bunk, using small lawn mower battery, put a maintain charger on it. works great 3 years running and no problem. I had put a tongue tool box on the front large enough to hold Honda 2000i generator and gas and some tools, but have only took generator camping once. as all locations have electricity, so I wanted the spare on the trailer. I  raised the tool box and built rack high enough to slide spare under it, wing nut and hook bolt hold it in place from underneath.