Over the last three months I've taken the plunge and changed over from trad to wfp, taking advice from many on this forum.
Here's how its gone.
I bought a trolley from an unamed source (I don't want to slag anyone off)
The trolley had a 60 ltr pressure vessel which was supposed to pump the water to the top of the pole.
I persisted with this system for 2 or 3 weeks until it got the better of me and i dumped the vessel and just strapped my Shurflo backpack to the trolley.
The trolley has two large Di filters fitted so I fill up at the custies tap.
I just remove my backpack when the access is bad.
I bought 2 poles, (from Cleaning Spot) one 18 ft Brodex hydra (good but i've needed to araldite all the clamps in place)
and one 35ft Extel, heavy but does the job well.
My prices were quite a lot lower than the other competing w/c 's in the area (i have lots of competition)
so I increased my prices slightly. No complaints so far.
With being able to do more work and access more windows, my round jumped by £200 immeadiatley.
It's been a hard and busy time but I now get my work done quicker and i think better and certainly safer.
I've had two or three complaints on the 1st clean and lost 3 or 4 custies, but overall i've come out ahead and I'm much happier.
Thanks to Chris Roberts (Deeside), Dale Matthews (Doncaster), Andy Atkinson and Scrimmy.
I would certainly recommend the backpack on a sacktruck route.
Hope this is an encouragement for others to give it a go.