To start with I told customers about why we were going over to wfp's etc. After noticing that most weren't the slighest bit interested in anything regarding new working practises other the term 'new rules from Europe' I dispensed with
leaflets, info, or anything else other than what could be said in 30 seconds.
To date, no one's complained. We were honest in that we were new to using the equipment and 'if not happy when the windows dry' - 'then phone us and we'll do them again'.
Wfp is certainly much much quicker for jobs suitable for wfp.
However, my original point about back strain still stands. If you had back pain from carrying ladders then you need treatment for that even if now, by using wfp, it has gone. It's a very simple point and can be proved by phoning any osteopath or any chiropracter or by searching the net.
The other point I made about the best tools for the job seems to also have got lost in the 'wfp' is the quickest and best. Giving examples of how fast wfp is, is not the point I was making. I could sit and type job after job where wfp is quicker.
So, if you had back pain from carrying ladders then it is more than probable that you will get, at some point, back pain from using wfp. It's hardly rocket science.
And .... use the whatever means is best for the job being done. Wfp cannot be used for every job can it but for a lot, it is quicker and safer.
Cheers