We have all seen the mathews adds , comparing nock travel to hoyts . I beleive most of us blew their claims off as bull , thinking they just want to sell bows and ditz the compitition . But some of what I've reed sugests that if you want straight and level nock travel with a single cam bow you nead to have a cam for every draw length , the ones that have modules wount provide as strait or as level nock travel when they get out of the length they were origanaly designed for . Here we go again "nock travel"