I will admit my bias (see WS thread) because I am the CWWA cruise director.
CWWA is a great way to get to know other boaters. A majority of the paddlers are on the lower end of the difficulty scale, but can be a lot of fun to paddle with. This year we have added some more difficult cruises such as Bailey Canyon, Numbers, and Slaughterhouse among others. Check out of website at www.coloradowhitewater.org
for the latest.
If you are an experienced boater, we need to you give back to the community. Everyone was a beginner at some point and volunteering for CWWA is a good way to pay back those who escorted you through the big stuff when you were a newbie. More importantly, by supporting CWWA, you are supporting access and boater's rights in the state of Colorado (something you all should appreciate). The club will be what the members want it to be. If you would like to see CWWA step it up a bit, then you and your boating buds should join and voice your opinion.
and yes, I have my own story (actually two) about CWWA trips on the upper Rustic. I think it is due to the participants over estimating their ability even when the ratings of the cruises are pumped up a bit.
If you have questions about CWWA feel free to email me at email@example.com