What is the cost for fishing/snorkel guides that will pick you up and take you out for half day or full day???

Half day (up to 4 hours) for US$175, US$275 for a full day. That's for a "combo" day.

165 half 225 full day book direct with the tour guide and get a better deal. armandogonzalez708@yahoo.com

Full day fishing ranges from $225-$375. Price differences reflect whether you book direct or through a property or booking service. Also depends on how far you travel. I don't think it's a reflection on quality/expertise, although some may provide more of an "entertainment" experience.