I've some high sash windows to clean. 65 foot (roughly). Can't be done with WFP as there is a recess. I'm going to look at the job from the insides, i'm considering seeing if its safe to lean out with either trad pole or wfp, see if it has eye bolts for harness etc. There is no ledge to step put onto, even if harnessed. If it can't be done in either of these ways, are them magnets any good, anyone ever used them?