Just installed my full length rack over the weekend.
The install was just fine. Not the best guided directions so that any noob that's never used a tool can do it, but if you've got some common sense and tool-ability to your brain, you'll be fine. Agree, the step bit is the way to go, just be careful and err on the side of too small, not over drilled. Because the if the push nuts don't fit super tight (hammer tap-in) then you risk having them move when you're trying to wrench down and clamp on the inside.
I have a Yakima Skybox 16 that I used to use with factory rails and Yakima xbars. With all that height and space, popping that Skybox on and off my 2013 Limited was a breeze! However, I couldn't get it far enough forward so the lift gate would always hit the Skybox. Rather annoying in a few different ways.
Post install, Skybox installed, no rubbing at lift gate... I realized that the very low profile of the Prinsu, which I really love from a design and aesthetic standpoint, does NOT bode well for easily installing and removing the Skybox. Nor do you have the option of placing it anywhere you want, it has to go to the side. Which for me is fine, but I would like the ability to move it to the middle, and that ain't happenin'.
2nd issue was installing my Road Shower 4. Again, the low profile is NOT friendly for mounting/screwing/wrenching devices onto the rack. It's super tight up under there. Getting a wrench of any kind up under there to evenly/properly tighten down was slow and tedious. Maybe I should remove the xbars, install the (insert whatever here) and then load back up. But that is not always the easiest or best thing to do when you have a big Skybox on the other side.
Again, loving the rack, there is so much space up there. Install was super easy, it's mega configurable, it's super light compared to way more expensive steel models. I'm just a little challenged on finding the right solution for easy-on - easy-off for attachments like the Yakima or RS.
Again, it's not a ding, just a point of reference. Also.. They totally under committed and way over delivered on my recent purchase. Was her in less than 2 weeks after delivery, peak season. Well done folks! Nice Decks too!