Right now I'm doing a Nuzlocke run, meaning if a pokemon faints I can't use it anymore. Therefore I don't bring pokemon that can be killed in one attack to the gym. --- Sent from my iPhone via PowerGuides 1.10
I have used a rotating team in my Bug type only run. I had to level grind lots of times, but had no problem when dealing with gyms. The best point of using a rotating team is the variety of Pokemon you can use, and makes your team more versatile.