Amazing! Recently purchased a new pair of big name brand, pro wading boots with rubber lug soles. As a felt sole w/carbide stud guy who fishes slimy, rocky fast moving rivers often I was somewhat skepticle of rubber soled boots. The sales guy assured me that the "newer" style rubber boots offered great traction and I purchased carbide studs (same brand as the boots) to go along with them. After methodically installing the studs with the provided tool they looked promising. However, after a trip to a smaller local stream with light algae covered rocks I was in shock at just how terrible they were. My heart sank in my chest after just dropping $335 bucks on new boots and studs!!! Even with a wading staff it was difficult to safely manuever or comfortably stand in one spot while casting. I resigned myself to removing the studs, grinding the rubber soles flat on my shop sander and gluing a new set of aftermarket felt soles w/studs onto them. Before I did that, I searched the web believing I cant be the only guy in this dilema. The search came up with a few solutions and the Grip Stud website was one of them. After looking at the site and making a phone call, Brian was quite helpful in assisting me to select the proper size set of Grip Studs that he assured me would solve my problem. I ordered the Grip Stud model he suggested with their tool along with the adhesive he recommended for a re-install. Again, methodically followed his instructions to install the new studs. Just a few days ago I put the Grip Studs to the "acid test" in a local fast moving river that has some of the most slippery algae cover rocks to be found in my area. To my amazement the new Grip Studs offered incredible, slip free traction to the point of even feeling secure without using my wading staff. Honestly, the solution to my problem without having to resort to grinding and re-soling. Brian thank you for your assistance, honesty, and a great product. One word of advice to others looking for wading shoe studs, look no further than Grip Studs!