I am looking for a provider whose preferred or default position for CFS is CG/RCG/ACG, and who can work it in that position for a long time/a lot without fatigue or cramps. I would be especially interested in a provider who can twerk as she is riding me.

A big booty is a big plus, but not a necessity. I have found that Latina and ebony providers often excel at this style of CFS, and I am partial to Latinas in particular, but I am open to all ethnic groups.