i put a pole up using the two bolts in the front of the box below the back window and 3/4 inch emt 1 hole clampRiley,
I'm not sure what your looking to do, but check out the image below. Maybe you can pull two of the bolts which hold the bed and fab something to go there. Ideally, you could pull the two bolts in the middle ( near the trunk lid ) and replace with slightly longer, then get a bracket between the two bolts with flag holders.
Good Luck and post whatever you do...
Does anyone have any idea of how to mount two flag poles
in the bed of a 2006 Honda ridgeline.