For kids or youth bows, you may want to attach the strings easily for your kids. For bows heavier than 30lbs, a stringer would be better. For a heavier bow and a laminated bow, we highly recommend you to attach the string using a stringer with assistance of your partner. Although you can string a laminated bow using step-through method, but the limbs might be twisted, and twisted limbs are hard to fix. We have videos on how to use the stringer. Please check the videos in our stringer product page.