During the game you want your players to focus on the next out or next hit - so should you. You can t teach a pitcher a new pitch in the seventh inning. Practice for Games - Put your emphasis in practice on situations you actually face in games. During practices you want to work on situations that occur in games. How much time should you spend in practice working on triple plays.
Time is precious and valuable, use it wisely.
You can not ask players to do something in a game that they have never worked on in practice. If you expect a player to bunt then you better have taught him well. No one wants to try something for the first time in a pressure situation with an audience. Better to have players be self reliant and recognize what they are doing and be able to correct it themselves. Let them learn from their mistakes without the fear of making mistakes.