I like the X Band Walks for hitting the butt muscles in a different way to usual exercises.
Whether it is technique or lack of strength, these are tougher than they look.
Leading your body to compensate and find ways to move without working the muscles it's meant to.
Here is an alternative which stops you being able to cheat and fires your butt muscles up like crazy!
This is my, mostly, Personal Trainer musings and information which I hope you'll find helpful!