It's illegal to shoot sharks here in Florida. I get requests for it all the time but we can't. I believe you can in Alabama. For sure in California. You have to use a large float and a strong anchoring head like the Innerloc Grapple so the head can't pull a chunk out. Gators have a bit tougher skin so we use muzzy's but on large fish and sharks it pays to have a large anchoring head! Good Luck!