I gess it depends on your idea of fun. I stopped by the hole today on my way back from boating, and I saw a guy in there. It looks to low to cartwheel, but flat spinning is easy at this level.
If things warm up there is a CHANCE it could be running in a week or two (by running I mean loops, and full on cartwheeling or what ever else you want to do)
well I hope that helps, see you there!