RE: Split a guide in the Keys 4/16-4/18???
I envy your trip to Islamorada.
I've fished that area a couple of times. It's possible to catch a bone wading flats from shore, but it's difficult. The best flats require a boat.
Bonefishing the keys is different from the Bahamas and, I suspect, Mexico. The flats are generally covered with turtle grass, making fish much morre difficult to spot. And the fish travel singly, for the most part, or in groups of five or less. Many, perhaps most, fish are in the 8+ weight class. A guide on his spotting platform really earns his keep, if he's good.
One good guide in Islamorada is John Wildeman. Contact him through his web site <www.bonefishing.net>.