Details Template:DriveRaked fin for classic longboarding. Ideal Board:Longboards. Construction:Fiberglass construction. Chris Christenson designed the Tracker series for bigger boards the way he likessimplified and basic. Theres a slightly wider base for drive and just enough rake that combines with a thinner tip for a tighter radius on turns and less drag. The 9.0 is more utilitarian and can be used for shorter longboards for driving down-the-line speed, nose rides and smooth cutbacks and gliders as well. Fin Specification Size Area 34.59″ Height 9.0″ Base 6.31″ Foil 50/50