I'm planning to go out for trout fishing this year. Today, I custom-tuned some of my old spoons with abalone sheets. Such sheets were very expensive about 10 years ago, but nowadays it's getting more and more easy to get them at cheaper price in fishing tackle shops here. I bought a couple of sheets for squid lures, but they're very thin and good for spoons, too. They come with double-stick sheets on one side, so all you have to do is to cut the sheet, put it on the spoon, and coat the surface by an instant glue. They're very attractive and productive in the water.