[QUOTE=jazzrider;4165114]
Guilherme, I wish you would come to VA and give me a two week one-on-one clinic. You just always have the right information – that and I envision you to look and talk like Sean Connery. Please don’t tell me your a little old lady from Des Moines. ;)[/QUOTE]
Sorry, I’ve really nothing in common with 007 except gender, a Naval rank, and a liking for blowing things up. Oh, and good looking women without too many clothes on! 
(But you’ll be happy to know I’ve even less in common with little old ladies from Des Moines. :lol: )
This question got me thinking and I started looking through some old hard copies of questions off some early TWH sites on AOL, runningwalk, The Gaited Horse, etc. Surprisingly, one of the more common questions was tripping. So maybe it is a problem at least in the TWH (and breeds derived from it).
I’m still of the opinion that if a problem exists it’s most likely from husbandry. Long toes and low heels are common in the TWH and many other gaited breeds and this is a set up for the horse getting “tanglefooted.”
A second cause can be riding a horse that’s not in shape and asking for too much performance. A horse that is excessively fatigued can loose its gait timing.
A third cause could be asking for too much speed and riding out of form. Until you get to speed racking or tolting most soft gaits are distance gaits, not speed gaits. Ride the horse through a correct form and you can foul up their timing.
A fourth cause can be riding in poorly fitted or improperly adjusted saddles (or other tack). A horse that’s in pain will have difficulty concentrating on business.
A fifth cause can be just a poor riding technique. If the horse has to do all the work balancing a rider that sitting up there like an old sack of wheat and banging on their mouth with 9" shank curb bit it will interfere with gait timing.
I found all of these discussions in those old hard copies. I’m sure that others can think of other possible causes.
So, yes, it seems to be a problem. But no, the problem is not the gait but rather the way the horse is prepared or the gait is ridden.
IMO you ride a gaited horse like you ride any other horse (bananced seat, in the center of the horse). There are no secret “tricks and traps” for honest trail riding. (Note that the show ring is a completely different universe and very different rules apply if you want to take home blues; but that is a competely separate discussion.)
Good luck with your horse! 
G.