You can do as many reps before, or after class as you want, and I suppose, incorporate some of those old moves into your game.
I do practice at home, I think the work I do at home helps as much , maybe more than class.
The good thing about class is when you get tired your pride keeps you going.
l practicing alone it is harder to push yourself.
Another problem in my mind I keep thinking we would do better if we would not go so fast.
Example: Half the upper belts side kicks be could better, I believe the reason for this is they move to quickly to hook kicks and other kicks.
Their is not enough muscle memory of the side kick, so you get something in between.