I tie some as I go. I leave sting of yarn in different straws in a sandwich bag for scent control. Then when I go I tie up 3 of this color, 2 of this color, 2 of this color. When I saw color I mean is the picture above. I make mine about this size of a dime.
Yarn balls are the ticket in my opinion. I plan on trying a fish pill approach like was stated in the linked article.