Originally Posted by
yammay
I don't have the same rack or bag, but the setup of mine is similar. I hook the hook to the bottom of the rack, on one of the outer tubes where they curve out from the middle. There's enough tension that it hooks on very securely.
Yup, that's exactly it. You want the bungy part with the hook to stretch, so it's holding securely. If that part is too long, which I don't think it will be, you can shorten it by tying a knot. Should work just fine.
That being said, I lost a pannier like this riding over a bump in the road and didn't even notice (people in the car honked and told me... doh...). I usually check back to make sure the bag is still there, if I go over something substantial.