I've been doing my own research on this subject myself. I have booked a guide for my days much like yourself, but would like some time to fish on my own. There is an article posted on an international fly fishing forum at the link below with some good information on finding fish on the caye's shores and some information on safe flats that you won't sink to your ears in.

Also, I found from my research that the local guides are excellent and many of them have escorted hosts of some very well known shows and publications. In fact, I've personally called some of these hosts to get some references and it turns out that they have a great deal of respect for these local guides.
http://globalflyfisher.com/reports/belize2002/

When are you going to be there?


Angelo