I have a 48V Club Car Precedent and the overall length is around 92". (I haul mine in the bed of the truck.)
Keep in mind, you will need around 110" if it has a rear seat.
As far a a hitch mounted ramp?
My cart weighs 887# per club car specs...and a rear seat adds about 150#. That would be way to much weight for a hitch mount IMO.
I did see a big class A this weekend, he had a custom made "frame welded platform" made of 2 x 3 box steal tube. It looked very solid.
2011 Coachman Freedom Express 295RLDS- Sold
2015 F-250 FX4 SUPER DUTY 6.2L Gas 4WD SuperCab XL 3.73 rear / 158" WB / 8' bed. Factory anti-sway and brake controller