boating safety

I usually launch out of Turtle Creek area and head towards reef complex for jig bite. I usually like to start early in the morning jut before sunrise. Wondering if anyone can tell me of any buoys/Cans etc that may be out there that aren't on a standard chart/Graph. I never assume that the charts have current info on them as there can always be new underwater hazards. I guess heading out a day early and scoping out a track would be best. maybe it's a dumb question but thought I would ask as I don't get out there much. thanks!