I am so glad you asked! The 2nd comp series at Bluff Cove will be on C-3 v2 surfboards. You have the option of using your own surfboard or using a rezzer board. It is also your choice if you use a longboard or a shortboard. The rezzer boards is long.
As of now, the three places I know to buy C-3 surfboards are at wave rider designs, Nizna Surf and the original Shack on Chi, Tsunami, and El Diablo. You can try out shorts at any official C-3 rezzer (try Bundy Reef), and longs on the beach at NS Surf Beach LOJA and at Bluff Cove.
If anyone knows of other places to buy C-3 v2 surfboards, let me know in the comments and I will update this post.