At one time I purchased, Aurora, Bear Creek and State Parks. I dont' visit Bear creek and Aurora enough anymore to justify the cost so I just get the State Parks. I had it paid for by the end of January this year.
Colorado State Parks Pass covers, Barbor Ponds, Boyd Lake, Chatfield, Cherry Creek, Jackson Lake, and qite a few others. At $55 dollors, it's paid for after 11 trips. I was saving money by the secound month.
i got busted at connected lakes last labor day. 2 rangers found my wife and told her to come and get me. my wife called me on my cell and i had to row the boat all the way back to get an earful from them. plus i didn't have a life-jacket either. anyways, they let me go and i offered to pay them 5.00 now but they said just go ahead and enjoy the rest of the day.