That patch (center of it) is located just about where the longest indentation rib is on the sailpanel.
To get a “proper eyeball “ on the situation I removed the filler elbow
And then drained the tank of all the 8 year old fuel 😳. Maple syrup?
clear hose and a piece of brake line stuffed in the end, still sticking out 1/2 inch so I can hear it touching the bottom, pull up 1/8 inch, tape hose to the piller and hose going down the side.. into my monster gas can…. Little suck with the vacuum pump and monitor… 55 minutes long…
10 gallons later.. empty