Sidepull bridle?

[guest@endurance.net]

Marlene mmht@frontiernet.net
I'm new and have never been on an endurance ride but I have a horse that I
am training with the hopes of being able to compete in the next couple of
years.  I have seen sidepull bridles and I'm interested in trying one but
I've never used one and I would like to know what the mechanics are and
how to use it appropriatly. I have also seen the sidepull used with a
snaffle and am wondering about that too. I'd apperciate any suggestions.
Thanks
Marlene