I have found that once water is much deeper than 30fow the success casting really goes down.Don't get me wrong, there are times when fish suspended in deeper water can be caught casting,but that can change and the fish will move deeper as sun rises and pressure pushes them down.When casting we use the weapons/worm harness setup.A weight 2ft ahead of the #4 gold Colorado and a double #2 gamagutsu hook.