As an add on....I took a look at that board today and noticed that the eye screw was aligned almost horizontal with the water line making it real easy for a typical sized carabiner clip to climb aboard...
.
.
.
.
I have turned the eye screw 90 degrees so as to make it a little harder for a carabiner to move over onto the board. Even still, I plan to keep the outermost clip at least a foot off the boards now and be sure to see exactly where they are....