I thought I'd put this in a new thread to keep from getting off topic in the other thread.
Seems that here lately a couple brickers have had the side bags fall off of their bikes.
I'm not saying that there is a right way or a wrong way to secure the bags to the Z-rails of the bikes. This is what I do when I'm traveling more than my daily commute.
Yes I lock the lower catch as the 1st step.
I picked up 4 of these "not for climbing" bungee cords, though I can't remember where.
I loop the cord thru the remaining "hole" in front of the lock catch of the rail from the backside and then hook it with the clip and pull it tight.
I then run the bungee up to the top of the case. The thickness of the catch body fits perfectly between the case and the z-rail to help prevent the case from slipping "in" towards the bike.
I hook up the 2nd cord and loop it once around the top case bracket, than wrap it a couple of times around the side case handle and then hook the remaining clip to the clip of the 1st cord.
Granted, this won't work well for a bike without a top trunk. But you get the idea.
This works for me with my LT's and I have yet to loose a bag. Nor do I want to.
I have to give credit for this idea to OTG. He did it 1st, and it works.
YMMV.
