Ok, so I don't know if it was technically a knock down... where is that line anyway? All I know is that it was that my little sloop was wayyyy far over, rail was fully buried and water was inching towards the cockpit. It was a thrilling experience and has given me more faith in the strength and forgiveness of my 22.We were on Jordan Lake here in NC on a windy day with the threat of thunderstorms and I had taken two folks out who had never sailed. Everything was going great and we had all of the 155 out and a full main hoisted. We were close hauled and making good speed when all of a sudden the wind shifted to our beam and kicked up really strong. The lake went from ripples to large waves and I could see the trees on the bank in violent motion. The boat heeled over immediately and for some reason I couldn't head up, perhaps the wind was pushing the hull too strongly? In any case, when I saw that I wouldn't be heading up I loosed the mainsheet and genoa sheets and the boat slowly came back up. It seemed like we were on our side for an eternity though it was probably more like one to two minutes. I was positive at one moment that it was going over but it held at a pretty steep angle for as long as I was comfortable.So, couple of things: 1) As the helmsman I should've paid closer attention to the approaching weather and acted sooner to head up and reef. 2) the little shoal keel 22 is hard to push over! 3) I feel much more comfortable in the boat now knowing that it will take much more to make a big mess.Just thought you guys might want to hear the story. I'm very new to sailing and this was a great experience for me. Don't they say that you don't get experience until after you need it? Oh well, I'll have it next time! Yeah I know, reef before you need it... but honestly, the conditions went from light to pounding in a matter of seconds.Cheers,