After reading this thread by the OP Ranger Green on the other site, and being told in the past nothing is legal on the water until lake is open to boating I wrote to CPW Headquarters for a definite ruling. This is their email back...
I understand you have a question regarding park regulations at Chatfield.
Boating is closed for the winter, and will be open once again March 1st. Inflatables and pontoons are still considered boating. You can find more information on the Chatfield State Park page on our website here.
If you have any further questions or concerns, you can e-mail me back or give us a call at 303-297-1192.
Have a great day!
DNR Fishing Reporter
Main (303) 297-1192 I Fax (303) 866-5070
1313 Sherman St. Denver CO, 80203
Think I'll wait!!!