In Bernard Darwin's book "The Golf Courses of the British Isles" he describes Hoylake as having "cops." For instance:
"Whatever the wind, it is our duty to begin with a long, straight drive between the club-house railings on the left and a sandy ditch and cop on the right. At about the distance of a good drive from the tee the cop turns at a right angle to the right, and we must follow the cop, striking it as near as we dare."
"If it be blowing strongly against us on the tee we shall hardly get home in two, and our second must needs be played over the corner of the cop and the out of bounds region that lies within it. If it blows behind us we shall be well clear of the cop with our drive..."
"The fourth is a short hole-the 'cop' by name so called from yet another bank that gaurds it."
"There is a narrow triangular green, guarded on the right by some straggling rushes on the left by an out of bounds field and a cop; there is likewise a pot bunker in front."
What is a "cop"? Is it simply some type of embankment or mound?
I went to the Hoylake web site and the date on the course featured on the site is 1933. Darwin book was done in 1913.