Charlie Ogletree's recommendation to me:
Use the Tornado DH as a gross adjustment...setting it to where you can easily control hull pops with just an arm's length of ease on the mainsheet. Anymore ease on main to stop hull pop means you need a touch more DH. Don't set any DH until both crew are double trapping constantly (ie until you're no longer looking for power). Have crew take mainsheet on the trap...they can sheet/ease much more effectively using both arms, legs & back than the one arm on the helmsman. This technique takes practise...getting the main sheeted in immediately after a puff hits, hull raises and before it starts dropping down again. Idea is to keep hull out without letting it go too high or low. Done properely you will feel the boat surge forward, not up in gusts. It is a very beautiful feeling when you get it right for the whole leg.
Mike.