How to Shape a Surfboard Double Concave Bottom

This is how I shape a double concave into surfboards. Not the only way but it's the way I like doing it. This surfboard has a single that transitions into a double concave out the tail. Here is where I usually order surf supplies and epoxy (affiliate link) https://greenlightsurfsupply.com/andreww The guys at Greenlight are awesome to deal with and the affiliate link helps me build the channel, I get a small percentage of the sale but it costs you nothing though! Follow me on Instagram: https://www.instagram.com/therealandreww/ My website: https://www.geckosurfboards.com/ _______________________________________________________ The following affiliate links help me build the channel Music I use: https://www.epidemicsound.com/referral/c6km4e/ Camera Gear I Use to Make Videos: Main Camera Sony A6700 - https://amzn.to/474CHeK Sigma 16mm F1.4 - https://amzn.to/2QorbWf (Amazing Lens) Sigma 30mm F1.4 - https://amzn.to/2U0Lmy5 Sony 18-135mm F3.5-5.6 https://amzn.to/2Se014Y Small Rig Cage - https://amzn.to/2C1r2A1 Travel and Action Cameras Sony RX100V - https://amzn.to/2D5Z3SH GoPro Hero12 Black - https://amzn.to/49yWhkR GoPro Hero10 Black - https://amzn.to/3K4B1W8 Insta360 GO 3 - https://amzn.to/478dtMJ Audio: Rode Wireless Go 2 - https://amzn.to/3EpFf9F Deity V-Mic D4 Duo Microphone - https://amzn.to/3jA6ALl Rode VideoMic Pro+ - https://amzn.to/2D7UcQS Rode VideoMic Micro - https://amzn.to/2CH7AdT Blue Yeti USB Mic - https://amzn.to/2QumWsE