^^^ You could push the handle down after starting it and put a rock on it to hold it down. Then the spinning blade would be easy to spray.
(it's prob not in the owners manual)
My JD came with a single wash port in the deck....just doesn't get it done. One blade area is ok...the other two aren't affected.
I also ride every morning....normally 18-22 miles on area roads. This morning, I met friends near GR and we did 12 and then beers. (it was 85 at 11am)