Haven't seen anyone crack this yet- on here at least- but it must be possible. I've had a few half hearted attempts, ad with job centre, got some calls and tried one. We started at nine, he was exhausted by 12.30, so I let him eat lunch ( i don't bother because I have to stop at three). When we resumed he had no energy at all. This was before I got the electric reel and all I was asking him to do was wind in and help with the hose, but even this was quicker to do myself.
Then someone I know had a go. He was a good worker, but tangled my hose badly with over enthusiastic winding and then burst it trying to undo the damage. Lost the next day waiting for a new £160 reel to come. Didn't get my logoed tee or work trousers back either.
The plan was he would work for me one day a week but everytime I went to pick him up he had already arranged to work for someone else.
That was months ago, and even though i'm miles behind because of holidays and would love some help (2k behind if i did the jobs i should) when he asks as he had been recently I say no.
Most seem to have similar or worse stories although some like gordons windows say it is worth it when you come out the other end.
You do seem to be doing the right thing, and for the right reasons.