Testers Announced! Can the proper golf shaft for your driver be determined solely by how you use the ground in your swing? As part of this "testers wanted" opportunity with Terra Forza Golf Shafts, we will find out! About Terra Forza Terra Forza has taken a new approach to shaft fittings and flexes. In this case, it is best to hear about their claims directly from them. “Our theory revolved around the idea that how a golfer loads and unloads a shaft is directly correlat