The almost un controllable urge to push those buttons in the coach can lead to an unpleasant day to say the least. I have often had the
un thinking motivation to just hit the dump button from inside but have abstained.
First, I don't trust those damn hoses and clamps. I'm constantly checking them prior to dumping because they come loose. 2nd, I can't remember when the last time was I checked those damn hoses and clamps.
I usually stand at the hose , holding it at the base of the coach, and then open the valve. I just don't trust the darn things.
So, I never use the inside dump button. I do use the grey water by pass from time to time however.