Horsewalkers can be useful if your horse has been off work and needs to be gently walked so you can get on with mucking out etc.. its time saving in that respect, or if you are unable to excercise your horse and there is no turnout where you keep the horse, a walker comes in useful. They can be useful for cold backed horses too - they can go in the walker for 5 or 10 mins before you get on. Its important to change direction also so not always on the same turn.
If you ride your horse and its turned out every day then its unlikely it would be used much.
i think one disadvantage could be is that if used in replacement for riding you could build the horse up physically but mentally he would be switched off. Some people arent keen on them as the horse is constantly turning. but i dont think its a problem. My farrier likes the floor to allow the horses foot to move naturally ie some horses walk with a twist action of the foot before it leaves the ground and on a rubber surface this action can be interfered with due to grip and can cause problems within the foot or tendons/ligaments. a sandy or bark surface may be good.
Walker
Definitely a walker :)
Anytime you could use the poke walker. All you need is a Pokemon in your PC
On the horse or the person? We use saddles on the horse, but they are not harnesses. On the person, there is not any harness.
A towel and walking him around, whether it be hand walking or a hot walker. You can also use special blankets, but you need about 3 of these because you have to change them when one gets wet, so I prefer the cool down and towel, and as a plus, you spend more time with your horse when cooling him down and toweling him dry, creating a stronger bond between him and you.
I honestly use my shampoo on my horse. unless you have a wild horse then any horse shampoo at your local stable or club should work
You can transport your horse in a horse trailer
you use a halter to move your horse from place to place
Stagecoach, horse or boat.
you kick the side of the horse and get it use to that
I believe you mean to "hit" or "tap" the horse not beat it and you would use a "whip" to urge the horse on.
To walk a horse, you would use a halter and lead rope. : )