I'd guess that majordude has other reasons too, but I do find it a little off-putting that NAR members are excluded from participating in a "fun" contest. Ok, Tripoli records are for Tripoli members, but a contest like that can be run for everyone. If the winner isn't a TRA member, then don't add it to the TRA record, but they earned the win anyway. Just seems like an elitist attitude. Not very welcoming.
Just my opinion as a disinterested bystander. I'm not going regardless (too far away). But I was at LDRS 42 in NY last year and wasn't excluded from anything. Very nice group of folks running it, and I hope to meet them again this year at their "URRF" launch in June.