The wider the forward part of the ski, the more stability and support it offers to the rider. Shaped and wide body skis make deepwater starts and turns easier while skiing at 22-28 mph. They require much less effort by the skier, making them fun and less tiring and are designed for slower boat speeds. These types of skis also don't require really strong towboat and many people enjoy using these skis while being pulled behind a PWC (Personal Water Craft). Many are great for skiers weighing over 180 pounds.
Also, wide body and shaped skis are proving popular to those water-skiers who participated in waterskiing in their younger days and are now re-entering the sport. These skiers are looking for skis that require less effort to maneuver.
The wide design provides a comfortable foundation for the skier who is taking their first turns on the slalom course. However, for the more advanced, several shaped slalom skis are designed to run the course at higher speeds and shorter line lengths. They allow the larger skiers to ride and turn with minimal effort and while providing stable recreational platform for novices.