Carl Paulson teaches you how to hit a long bunker shot using a small tee. The small tee should be used to help you learn how to get the ball into the air. The goal is to be able to hit the ball as if there is a small tee in the bunker without the tee actually being there.
Dennis Paulson teaches you a technique to help you practice hitting out of then bunker. You need to focus on keeping the club flat, hitting the ball on then toe, and keeping the shaft leaning backwards. You use the pitching wedge to help you prepare for the L wedge.
Dennis Paulson teaches you how to hit out of the sand when your ball is plugged. The trick is to pull your club out as soon as it enters the sand. This helps the ball to come out softly and land where you want it to land.