Yes, I’ve since been looking at various Skipjack 20’ fuel tank area photos. It seems like that area was isolated and vented with two hoses going out to exterior scoop style vents. I like that.There were pipes running up to the scoops on the gunnel in my SJ. I think this was was to vent the tank and engine area ( all one space in my boat when I started). Don't recall them being on the blower.