theres a good lake outside enniskillen called mill lough, there was 4 of us on it one day in 2 boats me an the mate were using dries all day and had over 30 browns and not a rainbow, but the other 2 mates were stripping cats whiskers on the sinking lines and they had over 20 rainbows and not a brownie. I find the rainbows more predatory than the brownies