Bob Evans
Contributor
Aotus, The Original or Pro Force Fin were designed for the flutter kick. Here's a video covering a Frog Kick in a pair of Tan Delta. https://www.youtube.com/watch?v=rQvpQHvui28&list=UUvhYeQ6hYptVuhgamaN717g Now the Excellator Force Fin was designed for Frog Kicking and work's well with other kick's. This model was designed for Captain Billy Deans, Key West Divers. Thanks for your interest and you will other videos on YouTube/Force fin.