My Friend puts on this Men's trip for the full moon in the fall after permits are over on the San Juan. About half the group usually puts on early Friday and sets camp at the RiverHouse. The rest of us float in after work under the full moon.
That was always one of my favorite parts of the trip. One year I floated in with ColoradoPaddler under a cloudy sky. We couldn't see anything and had to find the channel by sound of the water. Fortunately ColoadoPaddler was really good at it and I could just follow him.
Here's a link to the whole story.
Men Gone Wild