The 2013 US Nationals web site:
http://ozreport.com/2013USNationals.php

Pilot list
here.

Thirty five pilots signed up (including Campbell Bowen who never seems to
register or pay before the meet but who is being covered by Russell Brown and
will be towing a tug to the meet). Twenty five pilots have paid. Payment must be
received by the 22nd to hold a spot and not be put on the waiting list. We do
this so that we can know how many tugs to have Russell bring to the competition.

Pilots must be registered by the 11th in order to receive a tee-shirt.