I went to an ADBA weight pull 2 summers ago and I would NOT recommend bringing your Bear. The way the one I went to was set up had the show ring in one building and the weight pull track in another. They asked that no one allow their dogs into the buildings because some dogs participating were DA and the presence of other dogs distracted them. All dogs participating were kept in crates until they were up. I wanted to bring my dogs, but I am glad I did not. I saw a few people who wanted to go into the buildings to watch and couldn't unless someone was willing to keep their dogs for them. Of course, some asshat with a dog tried to walk through the weight pull building while there was a pull in progress. The APBT that was pulling saw the dog, jumped off the track mid-pull, and tried to get to it. The asshat was loudly asked to take his dog back outside and the dog pulling got a do over.
Eww, that's just awful! I was hoping it was just not liking strangers and not poor breeding. Wonder how long it will be before Ridgebacks get popular enough to start showing up on the BSL lists.