How can you get caught out by such 'massive' wind changes, Vincent, when the whole idea of going crop spraying at dawn, early evening or even night is to avoid the strong winds which are going to muck up your application? I might imagine that the torque from a relatively big prop could lead to favouring turning one way or the other (and that obviously becomes more significant as you slow down in the climb) but if the ball's in the middle and you don't exceed Clmax, then she's going to keep flying, downwind, 'upwind' (as someone previously wrote) or crosswind........especially in the zephyrs that are normal for a 502 doing its job.