Hack (noun).
(i) Hacks
The ideal Show Hack is of Thoroughbred type and should be capable of carrying an average adult. The Hack must be a pleasure to ride and have excellent manners. The Hack should be in self-carriage and be light and soft to ride, it should also have correct conformation with the emphasis on quality and elegance. The latter stems from a well set on head and neck combined with a good length of shoulder. The movement should be smooth and graceful with a true pointing of the toe. To achieve these qualities the Hack must be extremely well schooled.
Hacks can be:
Small Hack: mare or gelding four years old and over, exceeding 148cms, but not exceeding 154cms.
Large Hack: mare or gelding four years old and over, exceeding 154cms, but not exceeding 160cms.
The Association recommends that Shows should provide two classes for Hacks, but if it is only possible to hold one class the full range of height should be covered and the wording should be as follows:
Open Hack: mare or gelding four years old and over, exceeding 148cms, but not exceeding 160cms.
For Novice, Ladies Side Saddle, Young Rider, Restricted, Amateur and Amateur Owner Rider classes see Rule 7 (Definitions and Classifications).
Hack Judging: to be judged on type, ride, manners and conformation. It is recommended that Judges use the following percentages when judging Hacks: Ride 40%, Conformation 40%, Individual Show 20%.
The compulsory individual show should not exceed 1½ minutes and should include walk, trot, canter, rein-back, stand still and obedience to the leg. Judges should penalise lack of manners.
ii) A horse for rent
Hack (verb)
Trail ride. (hopefully on a horse that qualifies as a noun)