Benchseat back cover mat.

[Yukongk]

I bought the back bench cover. Basically it covers the back of the second row seats when they are folded down (the back of the seat is the floor in this position). I am going to cut the mat and attach each piece to each split seat so that they are always attached. My question is: is it okay to put a couple small screws into the back of the seat? Anything to watch out for?
I'm exploring other options such as making holes in the mat and attaching them to the headrest with zip ties/rope.

http://www.autoanything.com/floor-mats/75A2570A0A0.aspx

 

[Yukongk]

Nobody ever drilled into the seat backs? I imagine there are some type of support brackets I could tap into.