so browns are apex predators, and if your fishing coloured water, (ie, can't see your prop on your motor), you can catch browns just outside the prop wash.
i've caught browns 15' to 20' behind the ball, with the ball only down 3' to 4'....so 20' on the counter and big browns will smash....
if you have clear water (ie, see bottom in 20' or so), run your leads 100+ feet.