My kid is starting to be consistent enough that it really shows when we switch surfaces. Takes 30-60 minutes to really get a groove going and adjust the timing if its the first practice going from hard court back to the softer, slower indoor. We are also lucky enough to have free red clay courts at our disposal. From a development point of view, do you think its better to focus for long stretches on one type of surface, or over time will it be better to be going back and forth on almost a daily basis. Thanks!