I saw a double board system that someone had posted where they made the mount for the trunk on one board, the mount to replace the luggage rack out of the second, then bolted the two together. Also, the Givi mount will work if you want to spring for it. I've actually been thinking about this a lot lately, I'd like to replace the current mount though I have to admit, it's gone through a LOT and is still in good shape for me. Wonder what happened that caused yours to break? I've even closed the garage door on my trunk a couple of times and I can still move the whole bike side to side with my trunk's handle.