Sail or cat charter companies for daysail (private

Hi all,
We will be traveling soon to Grand Cayman and looking forward to our trip. We always go out for a day sail privately with a group of four to six and wanted info on where to find that info or any recs on who to use? Thanks so much for your help! <img src="http://www.traveltalkonline.com/forums/images/graemlins/Clapping.gif" alt="" />