How to mount a helmet on a Street Triple?

[t1maglio]

I guess this might be a no brainer, but when carrying a spare helmet (ie, going to pick up a girl) I would like to be able to mount a helmet on the bike. I could just bungee it to the seat but I see other guys on other bikes with them mounted off the side or whatever. Any help on how to go about doing this?

[Vwgolf115]

I strap my spare helmet to the strap going across the back of the banana seat and let it hang off to the side on top of the heat shield from the exhaust.

[NeonPlasma]

http://www.ehow.com/how_5021846_use-...cargo-net.html

[Diego]

There are a number of existing threads on this subject, one of which has a couple of elegant solutions illustrated:
Helmet Lock