I have the Garvin for my 06. It has 4 bolts (i swapped out for wing nuts) to remove then the whole thing tilts back. It does not interfere with my rear bumper/tire carrier at all. Then you can undo the top just like normal. I have transported two kayaks plus two bikes, and one trip a roof top fold out tent with no problems.
2006 TJ, 4" Teraflex SA, 1" Teraflex BL, Treadwright 285/75/R17 on HELO HE791s, Warn 8000s, Teraflex BellyUp Kit, Teraflex ESS SYE, Adams CV Driveshafts front and rear, locked front/rear, Rock Hard 4x4 Rear Bumper/Tire Carrier w/Cans/rock rack/HiLift, Garvin Tilt Roof Rack, Poison Spyder under armor (steering box, engine/trans skid, gas tank skid, rockers), sPod, CB, HAM, iPad Nav station, all LED internal and external, RTT.