Why Is Light Lining not such a good idea ?
Two reasons really, first targeting very large fish in open water on a very light line can require that you play them to the point where they’re unlikely to recover when released. This is a major problem with catch and release trout fishing in many areas, during the summer, when high temps and low oxygen levels make many waters pretty marginal. Second, it increased the likely hood of your line snapping and thus leaving the fish towing your terminal rig around which in turn can get snagged trapping the fish.