I've got a Naish 7'6. It's short and wide. Surfs good but the yaw when paddling is a killer. I've read Colas posts on paddling technique and adjusting stance to reduce yaw on shorter boards. Thats good info but it's going to take a bit of time to learn. I'm thinking I can get a quicker result by changing fins. The board comes standard as a quad. So here's the question. What will make it paddle straighter, A big centre with smaller sides (2+1 longboard setup) or a large thruster set such as shapers S9's?