The video below is of me surfing at Steamers lane, Santa Cruz, Ca. I'm paddling a Groovy. A boat that I shaped with a surf board shaper in California about 10 years ago. I learned a lot working with him. Board shapers that I've meet over the years have been some of the most interesting people I've ever meet. The boat here has no fins you can see how loose it is. Easy for spins but loses a lot of speed in the turns. I can't imagine not using fins now you get so much more drive. The picture above is of a Spyder with fins in. You can see how much more speed is generated.