Personally, I'm bringing only an 8wt and 10wt to cover everything from Bones to Permit and Tarpon. I've contemplated bringing an 11 or 12 as well, but since I was going in mid-April I will not. From what I hear, the large 100lb+ migratory Tarpon really don't start to move in until late April or May. A 12 is a lot of rod to be out there all day long with, at least it is for me. I feel comfortable taking a 30-90lb resident Tarpon on a 10. However, if I was going late Spring or Summer, then I would probably consider having at least an 11 with me. I figure if I run into a large Tarpon up to 115lbs, then I can probably take it on a 10, although we'd probably be wrestling for an hour or so; a very careful and well-played hour that is. I was at an international fly show in New Brunswick, NJ a few months back and ran into a guide from Belize River Lodge and he said that I should be OK with a 10 at that time of year. You should ask your guide, as he knows the fish better than anyone.