Try casting in front of them when they are cruising. If you can put it about 3' ahead without a big splash they will swim right to it. Do not use a heavy weight because they have a tendency to let go if the feel too much resistance.
"it doesn't matter if the horse is blind....Just load the cart anyway!!!" John Madden NFL Hall Of Fame) Fred Jefferson,MD (NAFC LM) (NAHC TLM)