Can a late model stringer (1985) run on earmuffs? I know the older stringers had a water inlet above the prop so muffs would not work, but mine appears to have inlets on the sides like my mercruiser. There is no hose attachment like some of the older 70's stringers. When I bought the boat the guy had it running for a while on earmuffs so it must work, but i really don't want to burn up the impeller