We we on the lake on Thursday, had the houseboat anchored to the beach in a nice cove just north of Hole in the Rock, right across from Ribbon Canyon. The first storm came through at about 11a. The winds were hitting the houseboat directly on the starboard side, as they had been for the last couple days, and up to that point the anchors were holding to the beach. A strong gust hit and ripped the anchors, along with half the beach. I looked up just as it broke loose, going to have nightmares of flying ropes and anchors, scary. I was able to get the motors going and get control of the boat but not without running on top of one of my jet skis when I got it back on the beach. We decided at that point since we wanted to move that day and were already loose, we would ride out the rest while motoring north on the channel. The weather cleared for a while and we had 3 jets fly over a few miles north of the Escalante. Right about the Rin Con a second storm caught us. Steering the houseboat proved difficult in the winds, but we managed. One of the craziest, and very frightening things I have seen in the lake were the little swirling waterspouts the gusting winds were creating in the big bay below the Rin Con. The third wave hit as we were going through Bullfrog bay, big waves and strong winds. We were lucky, even found a break in the weather to beach in Bullfrog around 5:30p, with the beach being just about nose to the wind. Overall probably worst storm I have ever been through on the lake, and first time I have been ripped from the beach.