The tails of outside bends where the current begins to pull away from the bank is my favorite sopt to catch flatheads. Especially if the bend has big rocks or rip rap in it. I anchor down in the current and fish the break on the edge of the fast water. The current dont bother them at night when they're moving. The best night of flatheading I've ever had was in a spot just like this. I remember the current was so fast we was listening to our anchor line humming all night.