I do know why he was sailing up the right bank, but he was doing this after he had made a tack, a simple wave of his arm would have been appropriate....he just could n,t be bothered, i had no clue if he was going to tack or not so followed the rules of the road,all he had to do was steer 2 degrees starboard, but no played chicken , he misjudged the speed , didn,t blink an eyelid, and tacked to get out of the mire, if he had done this with a less powered boat he would have been splinters, a simple mistake,which didn,t need to happen......a clear wave is all it takes....and some basic manners.