Meckwell Over 1NT
Meckwell assumes that the 1N bidder has 14-18 HCP.
Here are bids overcaller can make in the Meckwell system after an opening strong 1N:
Bids over a weak 1N:
...of Meckwell coming up for a pair is 1 in about 130 deals or once in nearly five 27-board tournaments according to the CardShark BidBase Practice program.
Or on average, only once in about 10 tournaments will you, personally, have the pleasure of bidding Meckwell. One other time in ten tournaments your partner will bid Meckwell and you will still need to know how to respond. So twice in ten tournaments (or 1 in 5) will your pair use Meckwell, as previously stated.
About 2/3rds of the time the Meckwell bid is 2 which is just a natural bid in Meckwell. So only 1/3rd of the time does Meckwell make conventional bids, or 1 time in almost 400 deals, or once in about 15 tournaments for your pair or once in 30 tournaments will you personally have the chance to make a conventional Meckwell bid. For this, you give up the chance to make a penalty double of a strong 1N.
The frequency of the conventional Meckwell bids are --
The odds of all this making me wonder if Meckwell is worth the trouble is about 100%