Although I am from across the pond, my partners and I love (very) weak NT openings when non-vul in seats 1, 2, and 3. We open 1NT with 10-13 hcp, although with 12 or 13 and a 5-card major, we will open at the one level in our major suit. When we began to play the mini-NT about 5 years ago, we tried to come up with a decent defense and could not find anything that really worked well. What we do is we play Landy or natural, nothing else.
Does anyone have any defense they use against the mini-NT that I might not have seen somewhere else?