[this was found at Kitesurftech... who sell Wipika and Naish kites]
The ability of the Naish and Wipika kites to spill wind in a 4 line
mode is a huge asset. This allows the rider to adjust the kite tilt
orientation on the fly and hold it at any desired setting. The more
you pull the upper lines attached to the ends of the leading edge the
more the wind spills and the less power the kite has. This is
accomplished by routing the upper lines to a pullable loop attached
to the center of the bar. It allows even a novice rider to easily
sail in control in overpowered conditions. In addition, while in the
forward pitched mode the kite points noticeably higher.
With a foil there are ways to deal with being overpowered but they
are not as easy perform and effects on the kite cannot be produced as
instantaneously. They involve getting the kite back to the edge of
the window by dragging your butt, heading downwind then back up,
applying brakes to stall then sending the kite back to the edge, or
going to shorter lines.
With the Naish and Wipika kites the big plus for advanced riders is
that you can sail spilling the wind in conditions which would be way
to windy in the 2 line mode and then when ready to jump simply tilt
the kite back to catch the full power of the wind and get mega air.
Robby can sail his 11 meter kite in 20 to 25 mph winds all day and
get huge air (photo at left). I imagine that is how he won the Maui
big air contest.
For novice to advanced riders it provides a much wider wind range for
the kite. What a luxury to be sailing and not have to come in to hide
from a passing squall that doubles the wind speed. Simply hook into
the upper lines loop and spill all the excess wind till the squall
passes. You can see how this would save a tremendous amount of
physical effort as opposed to battling what could be a real beast.