I use a wool/acrylic yarn called Wool Ease Thick and Quick. It's what Apex Predator uses in his tutorial in the how to section here on Tradgang. It's a really thick yarn, 6 ozs, whatever that means. The right yarn is the key. I've found that 8-10 loose wraps on a 2 inch jig I made from a coat hanger works great. I also make 1 1/2 inch diameter too. PM me if you want to try them, I'll send you some to try out.
I have plenty of brown and black, a few green and red.
I have pics, but can only send to your email.