The tank top rotation already includes two workouts each week for legs. You could always add another (skipping a day between each) using any of Cathe's leg tapes. You could alternate the leg work from Body Max, use CTX Leaner Legs, the leg portion of Power Hour or Mis, etc. Cathe has put out many leg workouts and they are all terrific.
Or, if you have a particular problem area, do the regular two leg workouts each week and on a third day, concentrate on the area or areas you want to improve most. You can pick and choose whichever of Cathe's workouts incorporate moves for the areas you are most concerned with.
Also, kickboxing does great things for legs. Try to include that into your cardio workout days.
Marlene