I went the other way, saw an opportunity, grew it to the point that 2.5 years ago, I split it off to its own business venture separate to my cleaning company.
If the folks in Canada who invented the air powered stretcher had actually produced enough to sell them outside their own installation company I would ditch my power stretcher in heartbeat. After three years they still can't find manufacturing for their product.
We did 45 restretchs in 2011
Looks like more this year
Just have to charge for it job averages are huge
There is a learning curve but mostly common sense
Luckily my tech has this trait.
So we are glad to provide this service