I've been there several times in a 24ft BW PureBay. The bayou on the NE corner has plenty of draft once inside but the route in is to enter from the gulf at the midpoint between the small island (shell bar) on the west side and the east bank. Then head nearly due north until about 200 yds off the bank and turn 90deg and head straight into the mouth. Look on google earth and find the white sand "beach"
on the north bank...head for it then turn right as mentioned. You will have plenty of water in the bayou until you get into rollover lake. I have caught a few specks in Flat lake on high tide. The opening of the bayou and the bar on the south side of it should hold flounder on the fall.