There are two balls near the shore. The ball nearest the anchorage is the best one of those two. Generally I surface swim out to the drop off.
The best ball for the wrecks however is the solo ball about 200 yards offshore toward the point. From the ball it's about 100 feet to the drop off. The two small tugboats are at the bottom of the drop by the ball. If you swim North along the drop toward the anchorage you will find the big tugboat. It's a great photo op. Just past that is the motor barge. There has been a medium sized Goliath grouper hanging out there. I stay high along the drop off until moving out to the chosen wreck to save air. It is possible to see all the wrecks on one dive but you need to be good with air.
G