You can, definately, get an older coach with enough HP to pull a trailer w/ your Harley's on them!
I decided on a vintage TT to start with and fell in love. A friend got a 1978 Monaco class C and it has a 460 so she has plenty of power for towing. Both of us paid a grand for our units and we put about 1500 into them making them what we wanted for ourselves. So for $2500 have exactly what we want. Can't beat that with a stick
They might not be the Bell of the Ball, at the Parks, but they are solid, inexpensive, and we love them.
The big thing was to be patient and wait for the perfect one that had been well loved and was solid. Only took her three months but I looked for over a year.
Good luck and let us know what you found (plus pictures!!