Iv'e been using slip bobbers for years, but i just started using the straw bobber above my slip bobber. some people are telling me to make my straw bobber only 4 to 6 inches longer than my slip bobber or it will pinch the line between the two. For example if my slip bobber is only 9 inches than my straw on the straw bobber should be 13 to 15 inches. Has anyone else heard of this?