Posted 2012-August-30, 18:13
I've played Precision with natural positives for many years. I've found natural continuation (given this is forcing pass situation) quite adequate. Pass/ Double inversion is not usually used at this level, but might work out OK as this should improve the bidding of opener's two-suited hands. New suit bids, no trump bids, and raises should be natural. These kinds of bids by fourth hand are neither as common nor as troublesome as 1♣ -(P)-1♦ negative-(2♠) and similar. By the way, I've been experimenting with immediate responses on negative values with shape (like Revision Club) and had had some interesting experiences.