There is a vast range of different wheels available for moving equipment around. (Just take a look at the Screwfix website and you will see a goodly selection!). Depending upon the design of the equipment it may even be possible simply to fit different wheels, more suitable for a particular surface. Many wheels simple fit into standard sockets. If you have a particular hoist in mind and can send me a close-up photograph then I might be able to make some suggestion for you.
For the future, liaison with the manufacturer might even result in them manufacturing the equipment with a range of interchangeable wheels.
Chris
Chris Packham
FRSPH, FInstSMM, MCMI, MIIRSM, MBICSc
EnviroDerm Services
Unit 10, Building 11, The Mews, Mitcheldean, GL17 0SN
Tel: +44 1386 832 311 (office), Mobile: +44 7818 035 898
www.enviroderm.co.uk