There are too many places along the road side to stop and fish to name. Essentially, I have looked for flats that are near deeper pockets of water (seen by looking at water color). I also tend to look for these situations near mangroves, as the chance for snook escalates. Be sure to bring the proper footwear, as the first few inches, or even more, of the substrate are often loose sand with pieces of live and dead coral in-between; it's a great way to get your feet, ankles, and shins sliced up if you're not careful. Try calling some of the fly fishing shops in the Keys for likely places and hot patterns; the time you invest in a call will be more than worth the time spent out on the water searching for those elusive Key Bones.