Now there are many factors that can kill a day of filming. Weather is a biggie, followed closely by lack of fish. As a general rule, I need to land at least three of the target species to make it work. Then there are superstition factors. As an example, I won't name names, but there are a few people who have convinced me they are utterly hopeless Hook Shots jinxes. Put them and a camera on any body of water, and suddenly that water is void of fish.