Water is absorbed from the small intestine by osmosis following the active absorption of solutes, primarily sodium chloride. REGULATION OF GASTROINTESTINAL PROCESSES Most gastrointestinal reflexes are initiated by luminal stimuli: (a) distension, (b) osmolarity, (c) acidity, and (d) digestion products.
Popular Mechanics has an article on their site describing a prototype of a designed from scratch Mastercraft wakeboard-specific Boat called the X-Trek. The boat has a unique design and layout from normal wakeboard boats, and it will be interesting to see this boat in reality.
These boats tend to have a low profile so you can 'walk' your rod around the boat unobstructed. These boats have a shallow draft (depth into the water) and produce a very small wake. People who chose boats for watersports usually chose a combination of a fish/ski boat or a straight water ski oriented boat. These boats are either U or V hull in shape and can be modified to produce a wake or little wake.