This page contains a collection of resources such as fin layout guides for different types of boards and fin setups. These guides can be freely downloaded to serve as a starting point for determining your custom layout.
These layout guides provide information on the positioning of fins for various types of fin setups. They are not specif to any given board length as they are only intended to serve as a starting point. It is left to the builder to determine their preferred layout.
A downloadable Fin Setup Primer has also been added to these guides. It should help gain a better understanding of the fin layout in general.
Additionally, there are also various guides detailing the GEARBOX system fin base and layout options. All are available as downloadable PDF files.