Where to hide away cabling running to the hatch?

Sorry, I've searched the forums and the only threads I've found all have broken image links.

I ordered a Bazooka sub that I will be installing later this week in a 2011 GTI 4-door. I'm looking for tips on how to run the wiring discretely to the hatch area. I've installed head units and replaced door speakers before, but installing a sub in the back of the car is a first for me.

What plastic bits are you folks prying up and hiding the cabling in, and do you have any tips?

the plastic door trim sills, B-pillar trim...as well as the large plastic trim against the side of the rear seat (depends on which side you're running the wires through). Get a "fish tape" from Lowes/Home Depot/Menards/etc and use it fish the wires through. DO NOT get the super flat one. It sucks. LOL