Ok, I have a 41' motorhome pulling 25'enclosed utility car trailer( that's total length,as trailers are measured on their total length tongue included Mine is a 20' box 5'tongue)yes with a tape its almost 67' long we've been full time for the past 1 1/12 years. I was also a triples/doubles truck driver for 25 years before I retired. So now you have the background here's my perspective
Yes its doable. I and many others do just what your asking Towing 4 down is the easiest by far.>>BUT I needed the space as my DW still works aranging conferences etc and needed supplies. so I built storage "attics" above the car.
Parks are harder to find, yes, but I've never had no- place to go! I just plan a little further ahead.The cost is also higher as its normally a "premium" spot. We Almost always ask for a 70' pull through .. There are many more places that can accommodate than you would think. We also casino camp and boondock in the SW easily A few times I have also dropped the trailer in a storage lot portion of the park and used a smaller site. when we get to the park if access to the rear of the trailer is a problem we pull the car our just as a 4 down'er would unhook at the office check in . Backing is a piece of cake, the long wheelbases make it easier but then again I've backed more trailers than I could count
tying it down and the reverse does involve getting down on hands and knees , in the dry inside I might add. but it only takes 10 min tops once you have it set up.Im 65 and not thin but squeeze out fine but I still can nascar the window if needed:C ,good shape I guess but order or get one with a escape door .. I should have and made my life a little easier!!
So.. Yes it can be done and without much pain but.. I have a specific need.
Given different circumstances, I'd 4 down. I don't fit in tight state parks .. don't try.Google earth views of the property ahead of time confirm what i'm looking for and if I even call ahead or just cross them off.
My only other comment is how will you fit a trike AND your car in that space ?? My car (a 17' volt) takes up most of the 20' box I have a 2' work bench across the front but little room between it and the front of the car.
Good luck with whatever you decide !!