It's 90-deg and humid as all get out. I decide to try night fishing for the first time. I get two floating lights and get set up on a spot with standing trees in 17-fow. The lights bring in tons of 1" shad. My depth find is just a gray screen reading 4-ft. (in 17 fow). I fish minnows at depths of 12 and 8 ft. all night long and only catch 6 keepers. Light breeze all night long. WHAT CAN I DO to be more productive??