Try this super-set technique to get strengthen your glutes. The technique is called strength endurance training and consists of pairing two exercises using the same muscle groups together. The exercise you perform first is a "strength" exercise while the exercise you perform second in the super-set is a "stabilization" exercise. The goal is to fatigue your big muscles and then use your smaller stabilizers that help to develop additional strength.
For your glutes try this superset:
1. Squat x 8 reps
2. Single Leg Squat Touchdown x 10 reps (each leg)
Perform 3-4 sets of this with 90 seconds rest after each super set.
Use as much weight as you can control and be sure to use proper technique throughout each movement.
Incorporating this type of super-set training, strength endurance, into your workout is sure to provide you with additional strength gains.
More Answers from Tyler Wallace - NASM Expert