What would you do here? It is difficult to do as this sign says because a boater needs to know what it says one hundred yards away so he can adjust his course. He is half way through when he can read it. It’s A4. Even if it was ten times the size you don't want to do what it says because there is a huge rock about four foot out from the towpath. So the sign is pointless, just the poles and the yellow tape would have been sufficient, maybe an arrow. CRT just over complicate everything.