Planning on installing a jack plate on 2101 Mako equipped with 200hp optimax. I think instead of going with the level gauge option on the jack plate, I'd rather go with a water pressure gauge so I know the engine is still getting water. I believe the small gray tube is already run up to the controls in the center console. Provided this is the case, will this work as like I'm thinking in regards to providing a consistent water reading until the engine gets jacked too far? I know there's electronics to plug into the Merc that do this, probably more accurate, but I'm not interested in the price to go that route.