Nevr used them myself, and not heard of weighted ones specifically, but know plenty of people who over-tighten the back boots to produce the same effect. Can't imagine it's beneficial to the tendons being squashed, but it does work.
have to say made no difference to mine using them as is the current trend, that is just putting them on as tight as poss just before the horse goes into the ring. however when i was a wee girl, weighted boots were used as day to day boots on anything a bit clumsy and only removed when the horse jumped. that did seem to work and it is also how the yanks get the knee action and extravagant paces on their standard bred horses in the show ring.
however there are plenty of people who swear by them and i suppose it depends on how sensitive the hind leg of the horse is.
Can anyone explain how the tightened boots work on the horse? Do they cause pain or discomfort? How heavy are the weighted boots? Is the idea to put strain on the horse's muscles to develop them or fool the horse into making more effort with lifting the legs to jump higher than it would otherwise be able to?
I got the impression that the horse would actually jump in them in the competition, not just working in. Like tigers eye says, the horse should over exaggerate its leg action because it is more aware of its legs. Could it do any damage long term tho' ?
i'm into show jumping and they deffinatly worked on most of the horses i have them on.it make the horses much more aware of having to pick up is legs.if you need to make your horse more careful behind or i should say have a better bascule through his back there is an excersise that mite help you,coming from a trot or a canter to a parallele have the front pole at least 25 to 35cm lower that the back rail and make sure yhat you bring him deep to fence that will make your horse having to come up in front and to finish his jump behind(don't have the fence to narrow)
i use them mainly at show.put them on now and again at home,firstly to see how the horse react and also to get them use to it.once they know,i only use them at shows.i find that if they are used too often at home they loose their effect.but if you do enough preparation and use the right excersise at home you will find that you won't need the boots too often.