You could even incorporate dry board and tramp if you have them. Set up a dive sheet that puts the skills and stations together. Leave room for one score after each skill. Bring together coaches and older athletes to sit at each station as judges. One judge at each station.
Kids travel around the facility getting a single score for each station and each skill.
The sheets all go on a clipboard with the group as it moves through the stations. And the kids would nearly always be doing something, so there is no more 25 minute wait to see one dive for the parents. This terrific idea was supplied to us by John Wolsh of Montgomery Dive Club. If you charge for an activity and drive the kids to the activity, make sure that you specify in writing that you are providing free transportation otherwise, you would be considered a professional livery service which could cause all sorts or legal hassles should something go wrong. N. Offer free time at the end of each practice where divers get to choose what they will work on during the last 10 minutes of practice.