first thing i did was cut the straps off dave!
i do know a guy who wears his on his back.he cleans my girlfriends windows for £4-50(4 bed house).i dont know how he does it as he s a big guy.he wears it on his back all the time.
i clean 4 cottages on a canal bank and i access them through another customers garden and its a pain carrying the backpack when full.i also have a few properties on main roads where its impractical to use the van mount.
ive got 2 commercial jobs to do this morning.one of them is gated with a courtyard and is also awkward access so a trolley would make it easier.
cheers chaps.i ordered a fold away trolley off amazon last night.