Originally Posted by cranky
I would suggest a
fork mount clamp. Hopefully you could fasten it to your rear rack directly somehow, or maybe to a 2x4 that could mount to the rack. Perhaps it would be easier, safer, and tighter than bungees.
No, that doesn't work because it clamps too tightly. It doesn't allow up-and-down pivoting as you go over bumps and whatnot.
I actually use the same method as the OP and it works just fine. It seems to work better, BTW, on the middle crossbar instead of the rear. Not sure why. Edit: I now see the OP has two crossbars in the middle. Moving one to the rear might be okay.