Tshirt?? Help? 1981 OP PRO AM in Huntington Beach??

I was living in Encinitas CA in the late 90s and found this shirt at a second hand clothing shop down by the Saloon.
Always held on to and only recently looked into the contest mentioned on the shirt.

Oddly the first contest was 1982 not 1981.
OP did apparently an attempted ‘exhibition’ in 1981.

I would love to know if anyone has any info on this.
I also have a near mint single fin stinger made in Huntington by Oliveras which I am trying to research.
Mike Oliveras possibly?

Bump
This link does not refer to a 1981 pro am. I may have a one and only?

http://holoholo.org/triplecrown/96tcs/news/ophistry.html

Inquire at HANSEN’S, in Encinitas. Don Hansen had a financial interest in OP, and my still have been involved in 1981. OP was sold to a large clothing manufacturer, based in San Diego. Might have been RATNERS. Not sure. But someone at HANSEN’S may have some history on it. I doubt that you have a one off T-Shirt.