We suggest using Almost Golf balls when hitting into outdoor nets or in a large front yard. The product will work with your real golf clubs. You will need to ensure the supplied club mounts are properly seated with the tapered end under the golf grip. Shock and vibration from real golf balls on mishits heavy turf interaction will yield misleading results, however, the basic pack is a great way to gain helpful metrics on clubhead speed and face angle at impact to improve your game with analytics. Improved SLX app coming soon!