Almost identical in the US, Welsh - though the "water test" doesn't have to be "conducted" in conjunction with a field trial, and it's a single marked retrieve of about 20-25 yards. Also seem to remember a few years ago when it was proposed at one of the ESS national trials that ducks be used - being, duh, waterfowl - for the water test instead of chukkar or pheasant. The outrage among the majority of handlers was mighty vocal.
Same goes, vis-a-vis Canada, for HTs, but you've got the US beat if only for the double that goes down in master. Not to mention the US spaniel test program has in the last 10-12 years all but become the sole province of the show fancy. Even more so now that "spaniel" hunt tests are open to - deep breath here - Airedales, flatcoats, Labs

, goldies, spinoni, German wirehair and shorthairs, the Kortals griffon, etc., etc.
By the way, 20 years or so ago, the first Master Hunter I ever saw at a spaniel hunt test happened to be a Welshie. What a joy to watch. The chap who put the title on the dog - the first MH for the WSS - was a retired school teacher utterly devoted to his dog as a working spaniel. A great model for others who were - hint - getting into the game. Always thought about old Ned and his Welshie not terribly long afterward when I put the second MH, and first for a bitch, on a Sussex.
To steer this back on topic, she, as with my other spaniels, was trained nonslip without place boards - but with plenty of help of the caliber Cass is now getting from the retriever squire of Ontario, Sir Krakadawn.
MG