As the lakes here in MN start to melt, I am confronted with the modifications I want to do on my 1980 O'Day 25. What is the best way to improve the ventilation on this boat? Some options are solar powered vents, static vents, cowling vents, and possibly changing out the head ports to ones that open. There are no vents installed on my boat yet. I am hesitant to cut holes in the deck. How and where should I cut if I opt to put in a vent. I want to make sure that the vent is out of the way of lines, prime relaxing real estate on the bow, sails, etc. What have people seen/done?Thanks,sPk