I watched a Ken Martin short video on their academy website, in which he shows the sand shot using the Sandy club.
I have tried a similar club from Golfworks in the past, in the 56 & 60 degree versions:
http://www.golfworks.com/product.asp_Q_pn_E_MA0057
I never had much use for the 56 and sold it to a buddy who improved his bunker play with it. Anyway, I got inspired from watching Ken Martin's video, so I dusted off the 60* club and headed for a practice bunker.
It was pretty darn automatic. Towards the end of my bucket I was able to hit shots that carried 10 yards, 15 yards, 20 yards, somewhat on command. Trajectory was not real high but not bad. Medium I guess, say maybe 6 to 8 feet high. I learned that when I made an effort to keep the trail wrist bent all the way through impact and pushing down, I got more height, along with more sand. It's hard to get it too deep no matter how you enter the sand or push. I don't know what it would be like in real fluffy sand, though.
From the Golfworks line, I think if the 60 had the extra bounce that the 56 had, it'd be very good for this method. I went ahead and bent my 60 to 62, to give it a bit more height on the shot and a bit more bounce angle on the sole. I tried it again and it was very nice.
I'm going to stick it in my bag. Now I have to figure out what to take out. I like my lob wedge. I like my sand wedge. I probably will split the difference and carry a weak sand wedge, like 57-58*, with not much bounce.
Has anyone here tried the Sandy or similar club? Tried a similar method? Peter, which method is your default?