Travel along any canal and one is likely to come across places where the offside vegetation extends quite some distance out into the canal. Often over half the width of the canal.
So one would think that when a boater is preparing to moor up he might avoid such places rather than force other boaters to run through a slalom, but no they all seem to moor without thought. This particular chap moored between two patches of overgrowth.
Then there is the chap who insists on mooring on a bend.