I feel the pain!!
My home is nestled in suburbia, populated by a bunch of soft pencil pushers except the guy next door, a former jock and now a gym teacher. He will help but only as available - which seldom meets my schedule for doing projects. So, with that said, I have learned a great deal about inclined planes (ramps), levers, pulleys (chain falls and the like), and wheeled conveyances (dolleys of whatever size I need). That patio door - I'm currently taking a break from finishing installing to write this , a 72x80 Marvin (300# HEAVY!!) was delivered by one guy and hoping for my help. Gotta say again, heavy, but the two of us did put it on the porch. Spring ahead - install time. A big lever, a nice skid and it's in place. I considered pulling the doors but that entailed taking off many pieces and a lot of trouble. The old one was disassembled, not quite as heavy en total, but have to say that loading it on my pick up for a final trip - gave me a good work out. Then there was the car body I installed on the frame with 2 chainfalls - again with no help. Oh and my age - beyond 70!!
Quando omni flunkus, moritati (When all else fails, play dead - R Green)