VALDEZ, Alaska – It’s a pretty sure bet that there’s a silver salmon bigger than 15.32 pounds swimming around in Prince William Sound but whether an angler with a Valdez Fish Derby ticket will catch it and weigh it in before the end of the Valdez Silver Salmon Derby is anyone’s guess. Currently Tom Karlsten of St. Cloud, Florida is leading the derby with a 15.32 pound silver he caught August 19th aboard the Long Shot. Karlsten said his wife is the Captain and credited her for putting him on the fish. If Karlsten’s silver is at the top