What do you think about this?:
3♣ is puppet stayman. 3♦,♥ are transfers. I think this is pretty common.
3♠ is transfer to 3NT.
3NT promises 5♠ and 4♥.
4♣ is gerber
4♦ 5-5 in majors
4M can be long minors and shortness in other M
.....2NT-3♦|3♥
-3♠ is without 4 spades
-3NT is with 4 spades
.....2NT-3♠|3NT
-pas normal 3NT
-4m is nat forsing
-higher bids can be anything what you want
Advantages:
-You are able to show 5spades and 4heards under 3NT.
-With 5heards and 4spades you play possible 4♠ from stronger hand.
-After 2NT-3NT|4M you can go on to slam (without fit you play 3NT).
-2NT-3♥|3♠-4♥ is 5-4 and forsing!
-2NT-3♦|3♥-3♠|3NT-4♥ shows 6 heards and is forsing.
-It's easy to show 5-5 in M's. When opener chooses a suit you can pass or continue in bidding.
Disadvantages:
-Possible lead directing doubles. Or is it an advantage?
-With 5 heards, 4spades and slam hand you must bid 4♠ after transfer to heards (3NT is passable)
-no transfers to minors.
-Can be disasterous when you forget and bid natural 3NT.......
Comments?

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