I'm looking for the NA Championship results for the Isotope class. I'm hoping that Eric (or someone within the class) will see this post and help me. 
Well, if by "NA" you mean "North American", there was no North American championship for Isotopes. The closest we came was a "National" championship. For a small write-up and results, see: 2005 Isotope National Championship Regatta.
That's great! Thanks.
You're welcome. Just out of curiosity, why do you want to know? I can't imagine anyone other than an Isotope sailor caring about it. 
Regards,
Eric
Well, if you had sent the story and results and pictures to Catamaran Sailor magazine, we would have printed it. We definitely care. We print everything we get from the Isotopes.
Eric -
Jake is collecting information on all classes' national level events so that the Alter Cup Committee can select a rotating class champion to be invited to the Championship in March. We choose one class that might not otherwise get representation every year.