as for grand turk. there isn't any parasailing on the island. nor are there any jet skis allowed as per the government policy protecting the reef. there is plenty of snorkling and swimming to be had. i hope this helps.
bermuda parasailing. i am pirtty sure they dont have any there at all ? i spent the better part of 2 8 month contracts there working on the norwegian crown and majesty. and at the beachs i visited i dont remember seeing any. Russell