Hi everyone
I just 'woke up and reread' the first post. The 2NT bid is a two way bid. Whoops!
That certainly makes more sense 'if' MisIry bidders do not want the other side to bid in their GF auctions.
Delete my 3H Michaels suggestion. Bad, bad Robert.
It appears to be easier to defend against the weak 3C version. You can bid 3Cs as Michaels here saving a whole level of bidding. You also get two bites at the apple, you can double 2NT for takeout or wait and double 3Cs for takeout.
If one of the NAMYATS defenses is used, you can double 2NT for takeout or pass and double 3Cs for penalty!
Aren't the MisIry bidders also barred from raising or jump raising 'clubs' after the two way 2NT opening. You are leaving the other pair all kinds of 'extra' bidding room that normal bidding would certainly not have.
Against the stronger version, the other pair will tend to bid three of a suit more often with long weak suits since the MisIry pair cannot risk passing out a 2NT bid that might be a GF hand.
I have read that the best defense against a Multi is to use the same methods against it. You can bid directly with weak hands and 'pass and bid' with stronger hands.
Being able to overcall suits either directly or after 'passing and later bidding', should give the other pair much better bidding results.
The weak 3C version would appear to be the normal holding(95%) so MisIry bidders allow the other pair extra room to bid and also several additional ways to bid.
Regards,
Robert