Here's the difference between the included tool and the one I picked up. In all my research on all the different forums regarding nutserts one thing was universal, they are tough and time consuming to install.
Now I'll have the tool when I want to put on the next whatever. It also allowed me to continue the installation myself. This is my number one piece of advice- get a different tool than the one they include.
Next step is to clamp the rocker panel to the Jeep. Get your spacing to your liking and secure it to the body. This will be your template. I drilled one hole on the far left and one far right, then I took it down and expanded the holes and put in 2 nutserts. This allows you to secure the rocker with bolts so you can mark and drill the remaining holes.
It may seem like an extra step, but doing it this way was safer and made for a more accurate install.
This is probably a good time to talk about the mechanics of drilling. Get a metal punch. They're cheap and it's the right way to drill metal. I placed the punch, a couple of whacks and I had a nice start point for the bit to catch.
I started with a 1/4 to drill the pilot holes through the armor. Then you pull the armor off and expand them with a 25/64. This was a surprisingly difficult bit to find! Home Despot does not carry the bit for sale by itself (at least in Napa). I had to buy a large set, not really a problem I guess.
After you carefully expand them, put some paint on the edges. If you go too fast with the 25/64 the bit can catch and make the hole too big. This would make it impossible for the nutsert to seat properly.
Now put the panel back on with the supplied bolts. I used a drop of loctite on each. Screw them in carefully. If you cross thread a bolt at this stage, I'm not sure there is an easy or quick way to fix it.
I sat on the curb and supported the rocker on my knees while I put in the bolts. I worked from the outside in, and waited to really tighten them until all were started.