U.S. Open King Mackerel Fishing Tournament - Coastal Carolina's Premier Fishing Tournament Forty plus years ago a small group of community leaders met and decided that they needed an event to showcase the great fall fishing Southport-Oak Island area has to offer. The prizes and expenses for the first tournament were guaranteed by those community leaders signing a promissory note at a local financial institution - thus the U.S. Open King Mackerel Tournament was born. The U.S. Open King Mackerel Tournament now attracts 400 boats annually and is held in high esteem by the community and anglers. For more information visit: https://www.usopenkmt.com/