http://www.tennis-warehouse.com/LC/BasicFacts.html String Fact #4 (Given the same swing motion, stiffness, string tention, and head-handle balance) Decreased string density (fewer strings) generates more power. How is this true? Is this the trampoline effect for DEEPER shots? Is this because you can generate topspin so you can hit shots harder and it will still drop into the field of play? Please explain.