So back in the day, frappés would definitely have been on my list as a movement I don't like to do. However, I've actually grown to become quite fond of them. I find it fun when my teacher says to do them again while telling the pianist to go faster. Doubles go great. I now enjoy their precision and speed.
But! Sometimes a teacher will throw something new into a frappé combination and it all goes haywire. For example, one time FBT asked for one count held at the ankle. Sounds simple enough, but most of my teachers usually have us hold in the extended position (if there is a hold), so I was fighting my muscle memory the whole time.
This week, I skipped out on Other Movement on Wednesday to take ballet because this teacher was subbing and I wanted to take the class. For frappé, he had us doing them from WRAPPED sur le cou-de-pied for avant. Wrapped! We normally do flexed. How the heck are you supposed to get around your ankle from wrapped to strike the floor? I did not really figure it out.
Interestingly enough, I once read that sur le cou-de-pied and frappé are the things that vary most from school to school.