Nah, Confluence isn't very good now. They actually have the kayak ladder blocked so most of the meager water heads over to the diversion dam where there is a water intake. You can call Confluence Kayaks to see if it has been taken off, but I doubt it.
For doing simple stuff with a boat for a beginner/intermediate to get the feel of a boat, I would consider 80-100 cfs the minimum.
Golden is at 95 cfs. Some of the drops may float your boat fine. There is some ice, but I think it is out of the way.
The best action is probably the Shoshone section of the Colorado at Glenwood, 2.5 hours away.