Hey davetrials. Nice to have you aboard. I don't know if you'll find too much in the way of observed trials, but my sons have dabbled in it quite a bit. My oldest has a pretty nice site that you may not have seen.
Trials On-Line That's my youngest son in the gallery on the rocks. The oldest (he is webmaster and designer for the site) is in there too. The site was featured a last year in Mountain Biking UK.
I personally haven't tried it except in the backyard on my son's bikes. They both have custom frames and components and have competed a bit. Also have lots of friends that are darn good trials riders.
We are just waiting for spring to arrive here so everyone in the cold midwestern United States can get out and enjoy the day. Currently, snow, cold and wet. Spring is here but you wouldn't know it.