The Northwest RC Shipmodlers in the Puget Sound Area(Seattle) run the Foss Cup.
http://www.shipmodelers.com/
2007
http://www.rcgroups.com/forums/showt...=711121&page=2
2006
http://www.rcgroups.com/forums/showthread.php?t=558913

The San Francisco Model Yacht Club(power) runs several events.
http://sfmyc.org/index.php
http://www.rcuniverse.com/forum/m_60...tm.htm#6025027

And the Model boat club in Burnaby BC also has a similar event.

I would also check with the
Cleveland Model boat club
http://www.clevelandmodelboat.com/schedule.html

Maybe the Buffalo Model boat club
http://www.buffalomodelboat.com/index.html

See if there are any similar events. [8D]