Sorry to sound dumb, but where does the wrist strap go on a 720? I just receieved the OEM TomTom 720 carry case with wrist strap in the mail. The only possible place I could see attaching this strap to is the bottom, but there's no way to fish the string in there so and it seems like it would also be in the way for when I put this thing on the dock/cradle... It's not like the ONE XL where it had a specific slot on the top for the strap. THANKS!