Doing some work tomorrow where there is a lot more glass on the backs than the front, some of these have windows over extensions etc. The access on some is down narrow steps then up decking steps etc, so rather than take two backpacks on trolleys to the backs i have rigged up one backpack on a trolley to use two poles at once a 22ft pole pluss a 32ft for the awkward windows so two people can do the backs while front ups are dripping. has anyonr else tried this? or is this just a daft idea?