Like any other drill, there are pitfalls. Sometimes it can be too easy, especially if there aren’t any other boats around. If you do the maneuvers only when comfortable, you can come away from the lap with a false confidence that doesn’t always stand up to the pressure of racing. That is why it is good to throw in unexpected moves; do penalty turns, double-tacks at the top, etc. More often though, especially with highly motived teams, the issue is not doing a lap that is up to your standards. In the 49er, if our lap went poorly my brother Jonathan and I would always stop, discuss what went right and wrong, and do it again until we felt good about our final lap.