When flying offshore to oil rigs in the Gulf of Mexico on windy days, a shut down was impossible. Even with a rotor brake, a slow turning rotor would flap and hit the tailboom of a Bell 47, Bell 206, Bell 205, Hughes 500, etc. Several times a day helicopters land on unmanned fuel platforms, sometimes with passengers, and the pilot gets out and self refuels with the engine at idle. This has been the norm for over 50 years.