To show the scale of this problem at MPA, and the impact it has on the islands -
Looking back over the TAF records between 01 Nov and 15 Dec, (and using the current policy rules that changed in mid Nov to include +/- 1 hour either side of forecast turbulence), during a period of 1080 hours, the airfield would have been closed to all fixed-wing traffic for 263 hours, a closure rate of 24.3%.
Is there any other international airport that is closed due wx anything close to this amount? This policy seems unique, and I am sure that the turbulence issues at MPA are not unique.