Reach out to Lane C. I believe he successfully infiltrated one our their members only forums. I've looked around but havent had any success myself. I ran into a bunch one time on top of a building right before blazing it. I am sure they got some great pics.
i had mixed results. some of the people on there dislike the idea of jumpers cause 'we could burn their sites' haha... but i also met a few explorers in my local area from that forum, and got some cool jumps based on access info they showed/shared with me.