Abstract-A fluid-structure interaction (FSI) analysis of a no. 3 wood golf club was performed to predict and compensate the downward aerodynamic force that occurs as a result of the club head face's loft angle. In a previous study, we performed an FSI analysis of a no. 1 wood club, wherein most of the deflection induced by aerodynamic forces was eliminated by attaching a flat air guide to the no. 1 wood. In order to eliminate the remaining effect of the aerodynamic forces almost completely, an appropriate modification in the design of the air guide is necessary. A modified air guide was attached to the no. 3 wood club in this study to determine how to increase the performance of the air guide. The golf club's sole deflection could be predicted with respect to certain quantities such as the aerodynamic force and stiffness of the wood head. The stiffness of the shaft was determined using several experiments. The aerodynamic force was obtained using the FSI analysis. We attempted to minimize the deflection induced by the imbalance of the aerodynamic forces, thus allowing a golfer to expect a more consistent and wellbalanced shot.