In Volume 1 of The Confidential Guide to Golf Courses, Tom Doak published that.

“A modestly interesting links in a picturesque small town just the other side of Coleraine from Portstewart and Portrush. There are some nice dunes at the edge of the course, but the adjacent rail line affects play on more holes.”

Castlerock received a score of 4 out of 10 from Tom Doak, and score of 4 and 5 out of 10 from two of his co-authors.