I'd like aging structures off anything over 40 pounds for a bighead and over 25 pounds for a silver. That would be really great. If you catch one, I'd want scales and a bone called the postcleithrum. I can send a Standard Operating Procedure with pictures as to how to pull this bone out. It is easy to do - just need a short pocketknife and you can do it in seconds. A pair of needlenose helps, but you can do it without them. Actually, the best bone in a really big fish might be the vertebrae up by the head, but those are a lot of work to pull out.