There's gotta be something that would slip under the bolt between your seat and tail fairing, but personally, I just use the factory loops. On my 2007 I loop them through the helmet Dring, then through the seat latch... this shortens the length so the Dring isn't hanging on the paint.
What year bike do you have? Might make a different.
Oh, and i have 2 helmets. One that is daily lock and leave helmet... may get bumped/kicked/etc.... and then my nice helmet for trips when i can keep it with me (either take it into restaraunt, into work, or not going in anywhere).