In RFDS Westops, for the PC12s, they had what was dubbed the 'Fat Mat'. Not sure what weight it was rated to but it involved taking out the normal stretchers and using a slide board that was secured to the floor.
Obviously the normal SLD couldn't be used so there were some real OHS issues getting the obese patient up into the aircraft. Never had to use the 'Fat Mat' and can't say I'm overly disappointed.
The V-22 Osprey was touted as a possible aircraft to be used in SAR Ops but I think the unit price was way too much. Questions: Does anyone know if the Osprey is capable of winching and what sort of speed/ range does it have?