Could the Wagtail be used effectively in preference to wfp system.
If you can still operate to 1st floor level from the ground then what would the advantage be for wfp. Speed - perhaps, but maybe not when you take into account filling barrells/loading/unloading/etc. I've used van mount wfp but not keen for domestic work. I presently use trolley system but find it hard work (or maybe i'm just getting old)