August back bay flounder fishing is not for those with a short attention span. However , with much effort there is some nice fish to be caught. Don’t try it without high-test bug spray. The green heads will eat you alive. Really it is time for offshore fishing. I caught these fish a few days back. A 25″ sheepshead and a 23.5 summer flounder.
Ken's Dock 
Your sheepshead looks more like a young black drum
You have me thinking about it now.