維基百科

昨晚第一次使用維基百科，找到以下提及 wakesurf 的講解，大家不妨看一看：

Wakesurfing
Wakesurfing is a watersport in which a surfer trails behind an inboard ski boat, surfing the boat's wake without being directly attached to the boat. The wake from the boat mimics the look and feel of an actual ocean wave. After getting up on the wave by use of a tow rope, wakesurfers drop the rope and ride the steep face below the wave's peak in a fashion reminiscent of ocean surfing. Wakesurfers generally use special boards, usually five feet or shorter.

Boat setup
Wakeboard boats are generally the boats of choice for this sport. Owners of these boats place ballast, such as extra water, lead weights, cement, or other heavy objects in different sections of the boat in order to weight the boat down and create a larger wake. Water ballast is the safest and preferred method as if your boat is swamped, the water ballast is neutrally buoyant allowing the boat to remain at the surface, while lead and cement weights will cause your boat to sink to the bottom.

順便一提，維基百科真是一個不錯的工具網站，值得推介。