The rope dart leash can chafe your finger if you're performing a lot of repetitive motions or drilling specific moves repeatedly. In a majority of cases, it's the pointer finger on your lead hand that ends up getting chafed the most.
To prevent chafing, especially if you are new to spinning dart, wrap a piece of athletic tape around the area of your pointer finger right above the joint on the fingertip side (photo below). A small piece of tape will do in order to maintain the freedom and flexibility of your finger.
If you have any questions, please feel free to contact us.