On Ray Roberts I practice casting for several hours maybe luck into a dink or two then go home frustrated!!
That's probably the best advice I could offer too. Lol.
Seriously tho, in my limited experience fishing falling water, the fish get up REAL tight to cover and you almost have to hit them in the head to get a bite. The only success I had was flipping a craw into really hard to get to places and right up against any cover.