Brian, about 3 hours. I have done some incredible fly fishing between the two lakes. Don't make it over much as I live about 100 feet off the San juan River and am able to walk out my door anytime and catch 21 inch trout😊
Oh yeah! The San Juan Shuffle! I'm sure you know what that is, right? You fish a San Juan Worm fly downstream, and do a little jig with your feet to send a cloud of river muck downstream ...the trout know that when something disturbs the bottom, that worms are sometimes set loose ...which means the chances that your fly will get hit go up. I think the technique is against the rules, but can't say for sure
I used to live in the Springs and fished between the lakes a lot (and various other places), and even did the "lawn chair, Coleman lantern, garlic/corn marshmallow" thing at night on 11-mile to catch nice trout... I had a pickup trashed by tennis-ball sized hail at 11-Mile too ...saw two large t-storms converge over the lake and a wall of hail started moving right at us, the water all turned to froth under the hail. No place to hide ...just run, throw your stuff under the truck and get in ...I still remember how loud that was and how my truck got totaled (it was not a new truck). I got an insurance settlement, did some fixes on my own, and drove that dented-up truck another couple of years. An RV that was up there got totally trashed from that storm... windows and vents busted out, roof torn, the whole thing full of water and shattered ice, old guy and his wife hiding up by the driver's seat.
Brian