I believe I am ready for my first visit to the beach. Got my rod, reel, rigs (pulley rig) , tackle box and bait. Been watching the videos on you tube and most mention a shock leader. My understanding of this, correct me if I am wrong, is that a stronger line is attached to your main line form the reel. The rig is then attached to to heavier line shock leader. My question is how long does the shock leader have to be ?? I am sure I will get some helpful tips so thank you in anticipation.