If the line breaks, the fish will only continue to swim with the leader in its mouth. No lead or meters of main line behind for the fish to keep swimming. Thus, the probability of getting stuck is extremely reduced. The most important thing about the whole system is that the leader is not tied to the main line, once the leader is tied to the main line the fish can of course never get rid of it if the line breaks. Therefore the rig is not included in the hit & run system. The lead can also be changed easily and quickly in terms of weight and color depending on the circumstances. All weights fit on one insert!