In Hawaii this kite is popular for targeting mahi mahi, giant trevally, yellowfin tuna and sailfish from cliff tops and rocky ledges.
See Hawaiin Fishing Articles for more info
In New Zealand most fishers use the flexiwing for catching snapper kahawai and gurnard.
These kites can also be made to launch themselves from the sea surface in areas with fickle winds, see the following article
How to make a kite self launching
The Flexiwing Kite is great for sportfishing, targeting gamefish and excels at powering 5 to 10 hook dropper rigs.