Can someone please tell me about the Rabble Rousers? What are the try-out requirements? Do you have to know how to tumble? If so, to what extent? Is it a problem if you can only do simple tumbling like cartwheels, etc. ? How many cheerleaders do they choose? Is there a certain amount for each grade level? If it's possible, can someone give me an overview of the try-outs and maybe a rubric they go by? Please and thank you. Go Army!