I've done some pretty extensive research myself, as I will be venturing in the first week of April for Tarpon, Bonefish, and Permit on Fly. It all really depends on what type of fishing you want to do and what species you're after. One of the reasons that I chose Belize for my trip is because it's a year-round fishery. There are small resident Tarpon that can be fished year-round, but the large migratory Tarpon start to come in around early May and gets really hot from there through the summer. I chose April myself because it's supposed to be less windy than Jan, Feb, or March. It's also supposed to be the best time for Permit. Bonefish are supposed to be good all year long, but peak a few time durin the year. As far as reef fishing, there are Barracuda, Jacks, and snappers, among other fish that can be had at times during the year. As far as Feb is concerned, most of what I read indicates that it can be quite windy, but when it's not, the fishing can be really good. Hope this helps.