I have had a SL7 for about a year or more. It is my favorite kite when the wind is just right. For me it is best with the wind between 7-12 mph, and thats about it. One thing that really helps is it mark the upper spreader and to use that as your ruler, seeing how you have to take it out anyway to measure the nose billow. There is a good site here http://trickthewind.com/ for the SL7, also Martin Schob's kites (Tricktails & stuff ). But like he says, stick with it...its worth it.