JohnyPython
FRF Addict
But your avatar shows shelves and maybe a water heater behind your truck, with plenty of room in front. That has to be deeper than 20 ft.
There are entry stairs behind the truck. I got about 4-5 inches front and back. It's tight but it fits.
I park nose in so I can get out.
I think a SCREW is 232" so it fits in 20ft with a bit to spare.