LOL, I about fell out of my chair laughing when I saw he/she was in St. Helens!! Look me up Jadewtch, email me as I am in St. Helens as well. You have no idea that you are living in the bonsai capital of Oregon. This little small town holds more than you could ever imagine.....
I collect a lot, and let me tell you that elevation has nothing to do with how gnarly and twisted the trees are. It has everything to do with growing conditions of the soil.... I know several places where the trees are twisted, tons of deadwood and grow at 2000 feet. Its all in the conditions, that should give you a place to start...... can't give away all te secrets....
Serious though, get ahold of me and I can help you along in this bonsai thing a little.
Jason