If you have a 139 or another small Cruiser-made trailer with the spare tire on the back, this blog post may be of interest:
https://lookmomimcamping.blogspot.co...pare-tire.html
If you already have a good way to transport your gas for your generator, I would not bother reading my blog post. Lots of detail, lots of photos, only of interest to folks who have the same problem I did -- how to transport the gas can??