Noted. I was thinking of using towels to cover up things I don't want to spray. I'm very knowledgeable to power washers. There is a tip that feathers out the water with less pressure, I think it's the green one or white, one of them, that I will be using for the bay.
For concrete, I have a single turbo bit and a twin turbo bit (can't wait to try them out).
Good looking out. 👌
@ndv