Re: Bahamas in early april
I go to South Andros in the Bahamas every March for bones. I fish out of the Emerald Palms hotel...you can google it. April is good too.
I think you will find you will have fewer opportunities at bonefish in the Keys. Although the fish that are there are often large fish.
Wherever you decide to go, you will want a guide. Actually, in the Bahamas, you'll have to have one unless you're flying your own skiff in, too. There are opportunities to wade guideless in the Keys, of course (just as there are in the Bahamas)...you just have to find the flats.