I mounted a 22.5" tire under behind fuel tank
Got the hoist from TECA for $65, spoke with the President Marvin, really nice folks! Mounted it on 11 guage 1x2 steel tube, drilled a access hole and found a gromet for it at the hardware store.
To get it under the RV, I roll it on some PVC sprinkler pipe and then just crank it up.
It will hold a spare unmounted sandwiched between plywood to keep it clean or a mounted spare without plywood.
The square tube across the bottom is not required per Teca but I added it as a safety measure
and..........I call CoachNet to change it!