I've always fished jerkbaits with 7' rods with fast action. I just like how the quick snaps with a fast action rod creates really erratic movements with the jerkbait. I believe fishing a longer rod lets me get away with the fast action of the rod, due to it being just a tad more parabolic than a shorter fast action rod due to length. One of the things about jerkbaits is the versatility of the lure. You just keep changing it up until the fish bites, then follow that pattern. If the water is clear and water is warmer go for faster retrieves and more erratic. Just change it up, you'll eventually get bit. Also, remember to pause from time to time, usually they will hit right after the pause or during. Don't give up on it, because jerkbaits are actually one of my go to lures.
Stick to natural colors or bone in clear water and darker more vibrant in stained water.
10lbs line gives better action, however I tend to just go ahead and throw 12lbs because I don't mind bigger line.