[///M1]

I figured out a way to make this work for our coupes, not acccording to the convertible diagram above though, but still works just as good and requires zero modifications.

If you lower the rear seats and look through the opening from inside the cabin and raise the carpetted trunk board (from its tail end, i.e. not from the bumper-side end), there are 2 holes underneath it. You will easily spot a big bolt in each of those openings, but the holes are big enough that you can attach the 2 hooks there. As it is a bit indented, the bulky plastic of the hooks actually falls below the level of the carpetted trunk floor board, so when you pop the seats back there is no sign of unevenness or elevation. The only drawback is that if you want to take the net out completely, you have to do the same (fold seats down, raise floorboard), which is no big deal, 2 mins max. Plus you can always unclip the front two hooks closest to the bumper.

It is also a bit cleaner and more stealth as you can't see the hooks coming out, just the net edge.