I can only speak for myself, I'm an average size guy in my 60 s and can stand it up by myself. Two adults should be able to do it.
You might also consider renting a tow dolly from U Haul and take it on a short trip. These are usually bigger rigs than an EZ Tow, but you'll get some idea if dolly towing is for you. Then you could invest in buying one.
Originally Posted by kjtrot
I believe that you have the correct solution for the winter storage of the tow dolly. If I can get the dolly through the door I am not sure that I can manhandle the 350 lb. dolly to an upright position, protect the fenders, lights etc. without it falling on me. Lots of potential for injury.