When I was coasting, used to spend all day dodging their pot line marks, but night time you just kept a straight course and hope the line cutter in front of the screw does its job well, though sometimes you used to come into port towing a pot line marker. Though the worst nightmares are the deep pots off Portugal, they have little lights on them and the whole sea sparkles with them, but the worst I have met is the floating tuna nets off Southern Spain, stretch for miles and are suspended from 4ft dia buoys ( went through one and kept praying the screw did not foul up.