Headed to Breckenridge

[Krazo]

taking the family to Breckenridge in 2 weeks.  we'll be there from the 15-22.  My son (he's 6) and wife fly fish and we'll be looking for some action while we're out there.   Any suggestions for a lake to hike to and fish or maybe a feeder creek to hit up?  Its been a long time since ive been out there but i recall fishing the blue, arkansas, miracle mile, and a few others but i really dont remember exactly where and from what i remember it was prob more technical than what my 6 yo can do.  His goal is the catch a cutthroat.  I'm thinking he may have more success fishing a mtn lake vs something like the blue.