I have a 13M and 9M, will be getting a 19M next. 6 PSI is what SS says, I had some problems with my 13M, 2 repairs back to back, must have touch a barnicle on the beach and cut the LE first time. I was using 7-7.5 PSI, 6 PSI feels soft, but kite handles just fine. Because of the smaller struts, you ...