Not meaning to sound like an arse but where in Utah are you talking/thinking about and how far is not too far to walk/hike. Are you willing to take some dirt roads to get there in your vehicle, high clearance even better but not 4 wheeling by any means. I know of a few places that might fit but depends on where you are at.
Fairly close to Joes Valley Reservoir which you could include on the list Potters Ponds north of JV, Miller Flat Res and Cleveland Res north of Potters Ponds, Huntington Res north of Miller Flat and Cleveland, Grassy Lake west of JV, Snow lake up off of Skyline drive west of JV and Grassy lake, Forsythe Res (tiger trout in there)south of I70 on 72 north of Loa/Fremont, Mill Meadows another option right down the road from Forsythe Res. I have caught many fish in all of those except Mill Meadows never fished it but from what I remember looked decent.
