Something I have seen a lot of nail professionals use that is easy and economical is a flex tape or wrap. It comes in a variety of colors and sizes for multiple uses and will stick to itself for easy application. You can simply wrap the finger or fingers that tend to get hit and replace the wrap as needed to protect the fingers. They can be found in medical supply, nail supply, and even veterinary supply stores or catalogs. The wraps are a good place to start, but practice of file control is an ideal add-on!
— Holly Schippers is a CND education ambassador and blogger for NAILS (blogs.nailsmag.com/fingernailfixer).