I see special SS1000's for doing one on a Roadglide (Shark nose 1000) and such but I don't see one for doing it on a Rigid/Hardtail. Have you ever considered this as a new challenge? I only see a dozen or less that have done it. If I searched it correctly.
Now we are talking. My first SS1000 was on this 1942 WLC wich you can see to the left. It was a very interesting ride, the bike broke down several thimes but i completed it with a marginal of 4 miles and 8 minutes.