A ranger from the local park system gave a talk on fishing the locals parks last year at one of our fly fishing club meetings. He said a buddy of his tied a deer hair "marshmellow" fly after watching trout gobbling up left over mini-marshmellows.

Some bait fishers use the little marsh mellows to help float their worm in the water and toss the left overs in the water when they leave...so the fish are trained to think those white blobs are food.

I haven't tried it yet mostly because I'm too lazy to spin that much deer hair. I have however found a source for small white foam cylinders that look just like those marsh mellows.

One of these days, I'll put a couple of 'em on a hook just to see if the trout really are that stupid.