I originally bought the 10lb fluorocarbon to fish Barrett Lake, but Mother Nature canceled that trip. I ended up using this product fishing in San Diego back bay. We targeted halibut and corvina. Fishing was a little slow, but we did catch a few halibut up to 24" and a couple of 3lb corvina. Last year I caught a 23+lb in the back bay with 15lb Opsin fluorocarbon. Great product