LOTS of good advice. Two points, especially:
From Findeight: Excellent point about “Making a pass”. Some people ride the entire ring equally. Wrong! Use the part of the ring in which the judge does not look to prepare for your PASS in front of the judge. Rebalance, regroup, if the horse is lazy, get a pace faster than you want so that he can slow down a little and still be at the pace you want as you move in front of the judge. If the horse is strong, use that part of the ring to do your subtle half halts, so that you can ease off his head as you make your pass.
And, it is no good making a PASS if you are hidden in a bunch of horses. NEVER get near enough to the judge to make him feel like you are going to run him down (Pisses them off bigtime ), but plan ahead and, if necessary, circle across the ring to get by yourself at your best gait. If you have a gait that is not as good as the other one, THAT is the time to find a group of horses and hide. You must ride with eyes in the back of your head, also, because a GOOD rider will come past you at the last minute and make YOUR pass, HER pass… Move in a tad so that she cannot get between you and the judge (but do it nicely, – do NOT CUT ANYONE ELSE OFF AT THE LAST MINUTE. There is smart riding and then there is rude riding. Never be a rude hack class rider. What goes around comes around and you will get paid back for it …)
By the same token, it is acceptable to call out (in a low voice) to other riders, “Rail” or “on the inside”, so that you can keep your track, if someone else is trying to do that to you. .
POINT TWO: Some judges use the walk to mark their card. Some actually judge the walk and count it as 1/3rd of the total impression. KNOW YOUR JUDGE. And make sure your horse has a good walk for those judges who actually care about that gait.
Also, some judges pick their winners on the first trot. Only a problem can knock them out of that position. Other judges think that the canter is the most important gait, since that is the gait used for jumping. So if you are a winner for 3 weeks and then get 4th the following week, it MAY be nothing you have done. It MAY just be that your horse has an AWESOME trot, but his canter just doesn’t go anywhere. The judge who pins you 4th is the one who waits for the canter to place his class and you just did not impress at that gait.
One more point: Know your competition. If you have one of the two top movers in the class, get away from the other good mover!!! Do not let your horse suffer by comparison if the judge can see you virtually side by side. The horse that wins the hack is often by himself. First because he has a smart rider who is positioning him well, and second, because no one else wants to hack next to him…
Riding a hack class takes practice. It is not like riding in a lesson and just concentrating on you and your horse. You must know where everyone else in the ring is, where the judge looks and what gait(s) he actually judges/thinks is the most important.
Ask your trainer, in a lesson to “hold a hack class” with at least 4 - 6 horses in it. Many trainers never even think of actually TEACHING these skills… (Don’t know why…) Everyone needs to practice the skills it will take to win. (Or to beat better movers.)