while on this topic - do you have standard vet cards in the US? or do 
they vary from ride to ride? if you already have vet cards, a log bok 
would be no different, except that they are all stuck together. the 
information that goes into them is nothing more or less than on an 
ordinary vet card (except for the id stuff at the front, and i'm sure 
no-one has a problem with THAT!).
 
> I would still let those not in AERC compete, under the rules already in
> place! NO need to exclude  people. Generally you are either going to know
> whether you want to get points on your horse or not, and if you need to do
> things retroactively, well, AERC at least already does most of this.
there's certainly no need to adopt all the rules and regulations we 
aussies ride under just because you like the idea of a log book. you 
adapt the situation to your own situation and degree of control.
> Plus if you have a book, it keeps one from worrying about wet papers and
> things. The only thing I don't agree with is novice level/endurance level. I
> think that should be left up to someone to decide what they can handle.
this is another of those rules that have nothing to do with the log book 
itself, though the log books help us keep track of it. it's a seperate issue.
> Also
> I don't think it is a good idea for the current vet to keep looking back at
> previous records --it could make them second guess their good judgment and
> be fatal to a horse. If there is a big question at the vet check, maybe then
> the book should get pulled out and looked at, but not until the vet gives
> his/her opinion about the horse without looking.
as a general rule the vets DON'T look at the other pages. they're usually 
too busy to be reading every horse's books as they vet them. but the 
information is there, if required, even if it is not looked at for 30 
rides, on that 31st ride you may be thankful for it.
nik