Re: Reefing a headsail???
Don't even bother trying to "repurpose" a mainsail as a genoa... Everything will be wrong about it.
By your description of the glue dot it sounds like it could be a North sail but I think Sostadt had a circular logo too.
Keep looking and try out this sail on the calm days. Please....
1984 Fast/Nicholson 345 "FastForward"
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)