Same here.

I find that I have to use the IMA, square-face method on my local courses who have shallow bunkers with coarse, gravelly sand. If you open the face up in those bunkers you'll just ricochet the club into the back of the ball. However, on the courses with deep soft sand, I have to use the conventional open-face technique. The IMA method causes the club to dig into the sand and the ball won't come out. I think with the IMA method you have to hit about 1/2" behind the ball in deep sand and that's too much precision for my abilities.