I have purchased a 1989 Catalina in great shpae, however, as usual, I want to make some modifications to make her more to my liking. One of the changes I want to make is the installation of a Nicro vent (solar/battery model). Have any of you used this item and if so, where did you mount it? I had a Siren and had installed a solar model which helped alot, but on the Cat, I am not sure of the best placement. On the sliding hatch, the front hatch, or some other spot?JoeCandia, NH