I have a 6m, 7m, 9m, 11m, 14m, 15m, 18m, 20m. All foils, 11,15,18 sonic frs, 9, 14ul, 20ul, PL Aeros. Plan on selling the Sonics now that I got the Aeros. The 20m ultralight is by far my most used on the snow (frozen lake) at 9000ft, previous most used was the 18m sonic. If kiting passes 12,000ft an...