I am a coach and teach many young kids. Usually, for my seven year olds, I have them playing with 25 inch racquets, but one of my students, who has very well developed strokes, is 54 inches and weighs 75 pounds (so realistically she is the same size as an average size 10 year old girl) I have her playing with a light 27 inch racquet. I had a debate with another coach about this, and he strongly stated that this was not a good idea, but my rebuttal was that she is very big for her age, has great technique, and would benefit much more from a full size racquet. Was just curious if any other coaches or parents had any feedback on this. Thanks.