The 90Nine is the bigger brother of the 90Three open source trickkite (239cm width). This ultralight version (Nitro Lite rods) has small vents in the sail which make it a bit more stable in bumpy wind without sacrificing trickability. This was shot at the gorgeous Schouwen north beach of Burgh-Haamstede, Zeeland. Lines: 25dAn, 35 meter.
More info and plans the 90Nine and 90Three family here: