drifting ships would be all fine so long as they behaved like drifting ships
in WSIM...drifting ships move downwind as they should, but they retain their original facing...
a drifting ship should swing round til its bow points into the wind and the stern downwind

given time a crew could improvise some sort of anchor or jury rig to bring a ship back under control
WSIM does not make any sort of provision for that unlike some other games

wind direction change will be great to have so long as it is not TOO random...wind very rarely reverses direction in the blink of an eye