If you want a cheap easy way to make a popper, then go to pearl's or michaels craft stores and buy cork stoppers. Cut a slit and ca glue a 3407 mustad into the slit. Tie on a tail, paint the cork and epoxy it. It'll stand up to many bluefish. There was a post about this a while back...search the archives. I'll post a pic when I can get one. If you want foam, then try searching the net for "bob's bangers" Popovics supposedly originated them and they're basically closed cell foam with mylar tape around them. Good luck.