Hi , need your advice to choose the correct Kiteboard model and size for Big Air. I use only footstraps, no boots at all. I ve been kiting for 12 years, Im 5'8 (1.73cm), 158lbs (72KG) (not powerful legs for sure, more on the skinny side), and have a 2017 Switchblade 9 and my home kite spot is choppy...