We tried pull behinds and I just don't like towing. We decided to go the Skoolie route with a very small bus that uses a regular gas v8 and has single rear tires. I think it is on a non stretched 1 ton van frame. We have had a great time in our first year. It does have a water heater, small refrigerator, shower and kitchen sink. And one 5' 3" bed for my wife. I use the passenger seat fully reclined or preferably a tent. We have a portable toilet for emergencies but use the campground toilet normally. And a portable A/C (shore power). 25gal grey water tank and 23 gal fresh water. It took some fitting. Also a bulkhead between the front and back to keep the cat in the back.