I was searching at [url]www.urbanscootin.com[/url] and found a post I did 2 years ago and think it just a valid today as it was then so thought I'd repost it here to a wider community.
Miguel
--------from http://www.urbanscootin.com/forum/viewtopic.php?f=1&t=7535&hilit=+helmet+hook+ --------
Helmet hook extender
by Miguel on Sun Aug 26, 2007 9:55 am
Putting my Shoei Multitec helmet on my Vino helmet hook is nearly impossible. I'm sure this solution this will work on most scooters and motorcycles. My solution has the other obvious advantages - you've got a wrench with you. I'd love to find a multitool to replace the adjustable wrench if anyone has any suggestions. To steal my helmet, somone would need to cut the D-rings or the wrench (which I think would be difficult to do but not impossible).
BTW, my medium helmet does fit under the seat with the helmet flip-up closed and put in upside down but I put my armored jacket under the seat so the helmet has to live outside. I put it in the helmet bag if I'm going to leave it all day.
Miguel