I went to Caye Caulker for 4 weeks in february-march 2011. I did the full-day snorkel experience few times with different tour operators (sailboat and boat). My best of the best is definitely the one with Steve Wright from Seahawk on his sailboat ''Blackhawk''. I have been surprised how professional was the excursion, good food, safe trip, respectful guides (Steve, Chucky and Charlie) with womans... It have been my best experience from my entire month in the island. The good thing with them is that we are never 25-30 on the sailboat, the max is around 18 but usually around 10-15, it's a perfect group ! You can contact him at
[email protected] Go with them, you won't regret it !!!