I was once fishing a small river that had just come back into shape from a large flood.
I came to a drift that had a large root wad washed into it. Knowing it was probably snaggy I put on a white styro float to keep out of the snags. My first pass a late summer run came up from under the root ball and swiped at the float, completely ignoring my eggs. Second pass, same thing! Third time, the fish grabbed the float and tried eating the the thing on it's return to the comfort of root ball. I must of looked stupid trying to set the hook on a fish with nothing but styrofaom in it's mouth! As God as my witness, being nobody else was around, this really happend. I guess late summer fish act like dumb hatchery trout.