RE: Have you tried to get somebody to try a Cathe worko...
Actually my daughter is a convert.
She likes Cathe and also Karen Voight. She was VERY resistant at first, but when she no longer had P.E. at school, I told her that a 3 week trial was mandatory for health reasons- 30 minutes a day. She quickly started slimming down and feeling better and she is now in her 6th month of working out. She has gone from a 41" hip to a 36" hip!! A 29" waist to a 26" waist! It is pretty amazing to watch. Now everyone wants "some of what she's having."
She likes to choose intermediate premixes.
KPC 42 min premix of intermediate drills and combo one and two
Kick Max kicking and punching drills
Bootcamp lower and cardio only (this one is tougher, but she uses lighter weights)
Push Pull or Supersets lighter weights
Kick Punch Crunch- circuits w/ Legs and Glutes premix, using lighter weights
These are all good starting points, I would think, for someone who is already in pretty good shape.