Board Thread:LOC General Discussion/@comment-71.234.109.140-20130729141841/@comment-8122845-20130805205255

Because they aren't supposed to evolve together. You have to evolve Hook and Pirate ship with Gold Dust. That's extinct, by the way, so good luck getting any. Likely in the range of 2.5k if there's any left on iOS. You can evolve it with up to three gold dust, which would bring it to maximum stats of 14.9k when pm. Once that's done, then you can evo with wendy. If you don't have gold dust and can't get it, then the cards are useless. Use them to enhance, they're bound so you can't sell them or anything.