The best way to island hop and have time to hang on each island is to do a live aboard sailing charter. Charters can go north and south, so you can hit South Water, Tobacco, Coco Plum, Rendezvous, Goff's, Caye Caulker, Ambergris, etc etc. The yachts are floating hotels, all inclusive with chef and skipper, plus completely private, no mixed groups. I have details on my website if that sounds like the sort of thing you had in mind!