1. Barbell Glute Bridge
If you are new to this exercise, start off without the barbell.
Use a towel if you don't have a neck pad for the bar
Squeeze your glutes at the peak of the movement
Advanced movement: place your back on a barbell
2. Sumo Squat
This one really activates the outside of the glutes
Slow on the way up, squeeze on the way up
Keep the knees above the ankles, not in front
Advanced movement: Use a kettle bell or barbell to increase weight
Consider "pumping" the movement once you feel the isolation
3. Lying Hip Abduction
Yes, we saw them in Buns O' Steel, and they were there for a reason. Hip Abduction movements really isolate the lateral/upper glutes without affecting the quads!
Focus on the glute squeeze
Throw a swiss ball under you for more resistance
Throw a band on the ankle for even more resistance
GHR Ham/Glute Raise
This one is amazing at glute isolation. Consider using after a compound movement like lunges or squat to isolate the glutes.
Knees just behind the pad
Advanced movement: Use a band instead of weights, it will maintain constant tension
While, its true that this will also hit your quads, hiking also activates the quad.