Good for you, but not good for me. I like having my marks every 10' near the chain splice so I can know when I'm starting to pull the chain off the mud. I've had my rode marked this way with paint for 4 years, and my mental acuity has not suffered. However, it does seem to drive you a little batty.Being too microscopic and needing 10 ft intervals is over examination IMHO....you could drive yourself batty with trying to figure this out to microscopically...In my 40 years or so in sailing in many different areas having 25 ft deliniations has always been adequate.
I've used washdown systems on charter boats and my friend's Mason 44 which she lent me in summer of 2015. It's much simpler to have my wife slowly drive the boat out of the anchorage while I dangle the anchor just under the water. The mud is gone in less than a minute, then I just pull it up through the roller - less time than it would take me to go down below to flip a circuit breaker for a washdown system. I guess that makes me a rube....the phenomena these anchors exhibit is usually a shovelful of thick mud in the spade which requires either a good wash down system or some other Rube Goldberg way to get the mud off the anchor.
But just in case I ever need a little washdown, I still have this portable system that I put together for my prior boat: