Rack it. it will be worth the money and time saved. Ive done the trunk thing even with my SUV, sucked! I did the hitch mount first and now went to the roof rack. pro's and cons to both.

Roof rack: I'm not a tall guy so getting it up on the roof isn't difficult, but would be easier if i were taller for sure. I'm always scared to death that I'm going to forget my bike is on top of my car and pull into my garage without taking it off, so I have to constantly remind myself or use notes to keep it in my thoughts.

Hitch mount: Found that even with my good yakima style the straps rubbed my paint in certain spots. if your rear ended, your bike us toast. Again like the roof rack it wasn't difficult but I found it a pain to always be putting on my hitch mount rack and taking it off after getting home. (I always park my vehicles in the garage so I couldn't leave it on and still close my garage door) Having a couple bikes on can be cumbersome and I didn't like other bike parts from the other bike being that close to mine with the possibility of scratching mine.

Pro's and cons to each.