I must state I am no expert at this as last year was my first. However...... Last season we did a lot of trolling over rough ground. Over rock ledges and around kelp beds. We generally troll then if you find a spot with a few fish you stop and cast at them. We never experimented much with sandy areas but im sure if you get the right area and conditions the bass will be playing on the sand too. Basically its troll to find the fish and cast once you have found them. Over time you seem to notice that the bass turn up in the same places so you could go there and cast and have success. I think quint does a bit of casting in areas hes had past success ???