No; in fact, that could only worsen things exponentially. If a limp is not visible (even slightly) when the horse is walking, he's trotted in hand. It should show up then if it's there.
I think you make it gallop, trot, or jump.
you make it trot
Yes; if it's not visible at the walk, you need to trot the horse in-hand and have someone watching its feet.
I think you have to place your horse in the middle
tie a string to the horse and flick it up
It depends on how much patience and training you give to the horse.
you can tell a horse to jump by pressing your legs against his side.... make sure not to hit his side quickly, because that will just make him go faster. so press your legs and keep them there until the horse has finished jumping
You press "A" when the box below the jump turns green.
Unlike the Harvest Moon Game for Gamecube you can not make your Horse Jump.
If you mean making it head into the centre of the jump, then just make sure you have good contact with the horse, reins not too short because it needs its neck to clear the jump. if you are struggling with this then try some guide poles, prop a pole up on the side of the jump to stop it running to that one side this should make it aim for the middle.
Milton John Whitakers horse x
Determing what limb a lameness originates from can be difficult as horses may compensate by changing the gate of the diagonal leg (so if it's the front right, it may appear to be the back left). Determining which leg it is can take several different steps including trotting on soft and hard ground and working in circles. Having someone trot the horse away from you and to you can be helpful along with trotting the horse in a straight line across in front of you.