Typically, these are used for driving trollies situations, where it’s useful to figure out whether you’re getting fish like salmon or walleye interested in your lures but not taking. Then, you can change things up to try to get a strike.
It’s also informative to understand just how often you not only have fish following your line and showing interest, but also striking it without getting hooked.
As for losing the camera to bottom snags; these cameras are often used in deep water trolled behind a boat where that is a very unlikely outcome.
