Used mainly if you want to fly fish with a regular casting rod. Thread your main line through the bombarda, then tie a stop in the shape of a spawning duck. Then attach a long nylon or fluorocarbon leader to the fly you want to fish with. Slow Sinking. Tip! To avoid tangles, there are bombasticks, but an otherwise very simple and cheap trick is to stop the bombarda in the air about 2 meters before it hits the water. Then the line is stretched out and the fly ends up beyond the bombarda.