The Gurgle Pop is a foam popper that is deadly on Bream and Bass. I have caught hundreds of Bass on his fly in the Boundary Waters.The fly is easy to tie.
The fly requires a foam strip that is about 1/4 inches wide for a size 10 hook. You can cut craft foam (available at Hobby Lobby) into 1/4 wide strips with scissors or rotary fabric cutter. But, the easiest way to cut the sheets into strips is with a paper shredder. It needs to be a fairly new shredder, one that has been around for years cutting paper may not be sharp enough anymore. Don't use a cross cut shredder however!
You can watch me tie this fly here.