You're about 7 figures light on that one...I have done, and had this done to me, so many times as a teenager. It was always funny. A buddy had a 16' ski boat sitting on the sandbar and I filled it with so much water that it was stuck on the bottom. He opened the plug - underwater- and let it drain before he could even move it.
of course, I've never done it from a $250k boat with 4 outboards.