I have a Bear Sportsman bow and I have hunted with it for 3 years and killed 2 deer with it the string is fraying a little should I change it I put wax on it regurly since I had it. when you change the string do you have to shoot in your bow again I am pretty shure you do I am just making shure. How often should I change the string on my bow I dont do any shooting leagues but I do shoot my bow off and on.[:-]