Nice soft boards? What sort of mamby pamby staff do you emply? Sounds like a nice idea, but what of the impliaction of contamination and wear? Sounds like you're creating problems. Of course, a nifty pair of knee pads, less than a tenner and ultimately disposable, might do the job just as well, at a fraction of the price. And save trying to reinvent the wheel.

:) Ok I must admit it was my idea and not theirs and I was being a tad sarcastic and hoping for your response... the trouble with knee pads is they apparently fit between the gaps and get caught. They are wearing knee pads tho and I agree this is probably the best solution. I was just after a more elegant solution and maybe some other options. As i said I don't think it exists for the reason you outline and I think I will stick current controls, it never hurts to ask tho, it must be a common occurrence. Thanks for your feedback, at least it reassures me of my position.