By a turn of luck, a friend of a friend has access to private, stocked trout-fishing ponds. They’re out near Fairplay, CO (home of South Park!), which is only about a 1:40 drive from Denver, so pretty accessible from here, unless you follow Google directions blindly and end up at the top of Mt Evans; then you have to detour out and around Breckenridge and it takes more like 3 hours 🙂
We did an overnight camping trip there and I tried my luck in the lakes, but couldn’t catch anything. Erika managed to catch her first fish though, which was a bit of a hit to my pride, since she’s never taken a class or anything. Had a great time regardless, although the wind came in pretty strong and made it really hard to cast.