With regards to the position of the spin pole, in heavier air I like to keep the center of the kite "pointing" to the direction I want to go. Pulling to pole too far aft will move the force too far to weather to make driving easier. I would recommend you play with pole position next time to see how it affects the weather helm. And I have had an O30 and a Martin 241 with the old POS rudders (thanks Bob for the proper term!).