One last follow up. In the past couple years, a buddy of mine and I have cruised not only up the Petaluma River to Petaluma, but also up the Suisun Slough to the Suisun Marina and up the Napa River to downtown Napa. All were marveous, very scenic cruises and water condions were very adequate. I could not recommend a cruise to any of these places higher. We generally cruise up one day at high tide, spend the night and come back home the next day. I am running out of places to go so if anyone out there has some suggestions, let me know.
DBH