Add Wash port to cheetah rear discharge deck?

has anybody added a wash port to their rear discharge deck? I see lots of cheap mowers and my buddies john deere with wash ports that you can hook to a water hose to wash out the deck. Seems to work pretty well. It seems that anytime i mow i have an annoying collection of grass under my deck that i never had with my yazoo/kees zero turn mower. This scag cheetah rear discharge collects grass like the deck is sprayed with glue underneath it.

Any advice on whether one port would even work or if i would need 3 separate ports?