I have always used plastic's before ever trying hair jigs and had great success. Plastic is still my first choice, but I have plenty of confidence using plastics for jigging. Sometimes the walleye want a faster fall that you get using hair vs plastic. But you can go to a heavier jig head to help. I have plenty of hair jigs, but still have better results using plastics. Like everything else, use what works for you, and don't be afraid to try new things.