I did comment on one of your other posts. I will tell you that Shoal Bay East is a great place to snorkel for the day. We do lots of snorkeling there. From past experience you will not have time on the Lambada to rent a cab for sight seeing. I believe that you would get a brief tour of the island if you go on the Tango as the people on their day sail arrive by van to Shoal Bay. If you really want to explore on your own I would suggest taking the private ferry over and spending the day. Lots of cabs available and they will drop you off and arrange a pickup time. Many of the drivers would stay with you for the day as guides too (not sure the price of that). Good luck!! Shoal Bay is beautiful!!