It does get tricky once you extend it, I've added 16' from my 24'er to give my 36'er some more reach, I have taken an old handle from a paint roller, and installed a wall hook into the handle, twist it onto a fiberglass pole to lift it up on the roof. Never had to do the full 50' of length. but thats a way to lift it up.
Its a bit of a "rich man's" water broom. Glenn who makes them is a great guy with a great product, regardless.