I like to roll the pinch weld. It doesn't take that long and it works just as well. Some people say to cut slits to roll it, and I tried that once and it just made the rockers wavy. I like to just gradually fold the whole thing.
i've rolled em and cut em.. i like em cut. when you drag on em rolled, you end up where you are when you cut em. you still gotta tack the outside skin of the rocker back to the backside of the rocker, unless you want em to flap around.
Weld a piece of 11guage or thicker angle iron or 1 inch square tubing just above the pinch to the inside of the rocker box. Drag or cut it off but be sure to weld the seam up after doing so or your rockers will separate.