This is probably not a help, but...
I put a Blue Ox base plate on my 2003 CRV. For this generation, it was not too hard. I think your 2007 is a different geometry. For one thing, the bumper centerline on yours is lower to the ground.
The not-too-hard part is removing the bumper fascia. Lots of plastic clips and a few screws to get it off. Be careful of the air bag sensors on the end of the 'horns' that support bumper structure.
You can do this...
2015 Thor Palazzo 33.3 ("Marco")
Towing 2011 Honda CR-V EX-L ("Dusty") with
Air Force One, Blue Ox Aventa LX