Ok, so I took some pics, but the truck is a little dirty, which makes it a bit hard to see......
This next pic....you see the grease and dirt that has attached itself on my pinchwelds. This acts like a protective barrier, and stops any salt from getting inside and rotting the truck.
This pic shows the inner rocker area. I've wire wheeled, then painted with Tremclad, and then painted with the the stock Evergreen Pearl color. I then clear coated everything. This was done last fall.
The next 2 pics is of the inner door, just under the interior door panel. I'm not sure about you guys, but I had some surface rust start here. If you look at the rubber seal in the previous pic, you can see an orange spot where the rusty door made contact with the seal. Again, wire wheel, tremclad, body color, and clear coat.
I painted the rocker panel with the doors open, and used a small 8"X11" piece of cardboard (piece of a cereal box works great), to shield the surrounding area as I spray painted. Before doing that, I simply used a small brush and a quart of white tremclad to cover the bare metal. Tremclad does not need a primer applied, and should go on the bare metal. Make sure if you use this method, to buy a flat white and not a glossy paint, as the body color won't stick very well.
That's about it folks, as I said, it's hard to see, but with the rocker being at the bottom of the truck, spray painting it won't show any discolouration. There certainly is some, so you wouldn't want to paint the middle of the door, or a something higher up, but the rocker panels are just fine.
I'm a majorly OCD when it comes to my truck's appearance, and would not recommend this if I wasn't completely happy with the outcome. Just make sure that you clean the area thoroughly with some paint thinner, prior to painting.
If you need any more pics, or more info....let me know!