Then if you see one poorly marked that is blatently ridiculous cut of the marker, the line sinks, and the idiot that put it there loses his equipment and catch. and whats with BLACK marker flags, at night or on a gloomy day with rough seas you have no chance, it as if they want you to foul your props,whats wrong with luminous green flags or something similar with a reflective finish so that a least at night a searchlight could pick them up.