Had one of those. Towing a big compressor around. Chiseled it off no problem but at the end of the day your fingers can't move!
Ended up with just one bloke who did not get effected by white finger symptoms! Too much chance of getting sued so had to give it up. Still got an air gun used once if anyone wants it. Payed £90 £20 + postage.[/QUOTE
Get the hire guys to deliver and pick up, probably 20 quid. Cp9s are lightweight guns. Hacking off is a very small part of plastering hence just hire. If your concerned about the sueing culture make sure your employees have read, understood and signed to agree to work to your method statement. If I was to worry about been sued I would be more concerned about dust inhalation, scaffolding, up to date toolbox talks etc.