I am 75kilos and ride Adam Koch's old mutant, yes his actual board! I fly Peter Lynn Guerilla's, 13 and 10, and in light wind i stack them. They are great floaty kites, especially the 13 in 12 - 22, and the 10 in 20 - 40, very fast! The 13 is not the best for doing toe side riding ticks, but it cran...