Scott,if your going to drill and install a new cowl vent nicro makes screw in solar vents the same size.You could inter change the regular passive vent with the powered vent when wanted.Keeps air flowing below all the time,I know many people that do this.I dont know about the weather were your at but you dont see many boats on the Chesapeake Bay with out a powered vent or two.Mine has never leaked a drop after all these years.
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