The stones are sometimes kept as trophies. People often make a necklace or bracelet out of them. I know one angler that has a small drybox full. Just a cool keepsake from a cool fish.
Hubbs has a wsb hatchery. They grow and release hundreds of juvie wsb each year to try and help the fish stocks
. All hatchery fish have a tag in the head. They want you to return fish heads so they can see if it's one of theirs. The tag is so small we would never find it, you need their special scanner. Most of the hatchery fish caught by anglers are on the small side if I remember right.
google hubbs hatchery for more info. A hatchery tour is very worthwhile.