Here is what we play (I would be interested in any comments of pros and cons of this treatment) It is simple and easy to remember. After 2NT 3C = puppet 3D = transfer to hearts 3H = transfer to spades 3S is a relay to 3NT then responder follow ups: pass is to play and other bids show the minors: 4C = single suit clubs 4D = single suit diamonds 4H = both minors, longer clubs 4S = both minors, longer diamonds 4NT= both minors equal length 3NT = 5 spades, 4 hearts, no slam interest With 5 hearts and 4 spades (all strengths) transfer to hearts and then bid spades With 5 spades and 4 hearts and slam interest transfer to spades and then bid hearts.