This is genius. Now to put something similar to all the drain points!! The new I/Os at the boat show have a 1 lever pull and drain setup. I saw it on a Volvo Penta but salesman says it is industry wide. You can use your boat anytime of the year with a setup like that.
This fancy valve will make things much easier though. I already have mine in order just hours after I read this. Thanks for sharing!!