Pontious
How do the SAR crews operate?
Very carefully!
They also have the ability to use their landing and floodlights and nowadays have NVG and probably FLIR for all I know. They also tend to operate in an area that they get to know very well.
In my days in SAR, Whirlwind and Wessex we were even more careful/stupid!
PS.
you need a guy on the ground with an anemometer
I think you meant altimeter?