On snow 40 knots is nuts. 20 knots is a handful 10 knots is sweet 5 knots works pretty good too a 9m (ram) will kill you in 40 knots the best 9m (so they say) depowerable ram; Ozone Frenzy. I fly Little devils 6 and 9. stable and easy you don't want a fast kite, other than that everything works, rig...