I'm not positive but I believe that the trout there is just a mold for a rubber trout he will make.I don't think the one pictured is the exact bait,it has no hinges or pivot point from what I can see.
The actual bait will be all rubber and flexable.Again,I'm not positive though,just my take on what he said in the post and my sometimes very wrong perspective.

Overall a very realistic looking lure and one I would love to have in my collection.