I did the sub crawl with it on the ground. I could place it on the couch I guess, I'll try that tonight.
There is room in the back corner directly behind where I sit. I do get decent response there but not quite as good as the other corner by the A/V equipment, again I assume because the ceiling is higher. I would actually prefer it here because it's out of the way and behind the door when it's open. I also don't know if it makes any difference at all but having my equipment 12" from the sub doesn't exactly appeal to me either.
Hmm, five more hours and I can start experimenting again.