If not already stated, I understand ( as aviation photographer + yachtie ) that on some SAR Helo's such as IJ the winchman - bloke still aboard - has a remote control for fine movement in the hover ?
Then again the person who told me this was a particular B.S. Merchant, supposedly avionics type & freelance Coastguard.
When he - a rather rotund figure and not a great friend - told me he was going to be the demo' winch ( up & down ) guy at a Boat Show one year, I couldn't resist saying " I didn't know they used Chinooks for SAR " !
This did not go down well, as I was apparently the 20-30th person to mention that or wire strain testing...
BTW we yachties get a fair bit of info on SAR procedures, - the more the better but hearing VHF is a problem - and I for one have a yellow painted cockpit floor for winchmen to spot in case things go really tits up.