I had a similar problem in Puget Sound. The boat went sideways instead of backwards when I put it in reverse. My slip is the first on the dock with no port side finger pier and the wind was blowing such that she was immediately swung into the dock's gantry. So I was stuck fending off with a boat hook and no steerage . Fortunately, a passing fellow sailor got a hand on a bow line we were able to get her back along side the finger pier. The diver said the Max prop and shaft were heavily encrusted with many layers of barnacles. I have made it a habit to spin the prop every 2 weeks whether or not I take her out. Apparently, this is no longer sufficient.