Why not lift the restriction of only playing the full ring games, and at least also include playing 6-handed?A good deal of players play solidly preflop in full ring games at those levels (.25/.50, .50/1); and since they play fewer hands, they have easier decisions to make post-flop.Playing 6-handed, they are forced to play a wider range of hands, there is more post-flop action, more mistakes to profit from, and also them being involved in more hands means that you can pick up on their tendencies quicker.