My family has been going to the Cape since my youngest, now 31, was three years old. What a place! We scallop, fish, scallop then fish. Every nite we'd get in about 8:30, cook scallops, crab, shark, speck, red...... We have only missed maybe 4 years out of all this time. We made some of the best memories of our lives there. My adult kids now take their kids. The beauty of the PSJ area is the variety of marine life you don't see as much of here in beautiful Pensacola; horseshoe crab, scallops in abundance, leopard rays. On and on I could go.
For scallop, Black's Island area is most productive and produces best quality. In good years, the flats mentioned above behind the State Park Cabins also provides a great experience especially for young kids to scallop. You can find a shallow bar to anchor on surounded by grass where they can play and scallop while digging up countless starfish with their toes. It's easy to get to in a very short time and if a thunder storm comes up you can get back quickly with little ones.
When fishing over the grass, be aware that you are probably going to lose a few plugs. A lot of things with very big teeth will just cut you off. I have watched the Tarpon jump not 30 feet behind me while fishing over the grass in 5 feet of water. If you want a "heavy fish" experience for yourself or a young one, simply toss your bait net off the dock at State Park launch and you'll get all the bait you need very quickly. Go straight out the channel until the water turns a dark green, hang a finger mullet or pinfish down and get ready to hook a shark. They are abundant and lots of fun.
Anyway, I'd move there tomorrow if I could; it's a paradise in driving distance.....................<