The guy got onto the boat as it was moving as he was dropped of / into it with 2 large electric pumps and a power pack by another rescue marine boat. The Larson was floating and empty of free water by the time it got to Marblehead. I have been called super stupid by a few for anchoring of the back and believe me I am not feeling real smart, but 90% of the perch fisherman anchor of the back to keep the boat in one place. But unless a mechanical issue is found, one rogue waved swamped and sunk this 29' boat anchored of the stern in less than 5 minutes. Open back boats should be especially concerned of anchoring off the stern from now on.