Abstract: A modular bunk cover apparatus and system for protecting the hull of a watercraft from abrasive contact with a bunk, such as the bunks found on boat trailers, boat lifts, boat storage racks, and the like. The modular bunk cover apparatus and system can be installed on an existing bunk without removing the bunk from the trailer or other structure. The modular bunk cover apparatus and system facilitates easy launching and loading of a boat on a trailer or boat lift. The system is a replacement for carpet systems that tend to degrade over time, eventually falling off the bunk and subsequently creating a hazard for marine life, birds, and mammals.