Quote Originally Posted by StephenF10 View Post
I have a Safe'N'Sound seat in the middle and a 60cm extension strap to the anchor point above the rear window. It has never interfered with anything I have carried in the rear, and if you do have a lot of tall cargo you should easily be able to position it to clear the strap.

As as been said, it's a far easier solution than drilling the floor.

Stephen.
I have used the above rear window anchor point when travelling with my 3 young grandchildren. My Milford cargo barrier came with a cut out section that allows the strap to the top anchor point to pass through (not sure about other brands).