Thanks for your input snapdragen. I really don't know if there's any chance the bike would come off the trainer or not. It seems pretty secure.

mickchick, I've never ridden my bike or jogged with an iPod in my ears. I think hearing in these situations is important. Now, I will ride my bike (beach cruiser) on the beach and on casual trails without a helmet.

I feel like I've really sidetracked this Title 9 thread -- I'm so sorry! I'll stop now.