As far as tryouts go, a lot will depend on your score sheet. Will it focus on:
-learning ability (how quickly kids can pick up choreo, do they get frustrated)
-competition prep (performance ability, skill requirement tests)
-stunting (time taken out to teach new girls trying out?)
-sideline skills (motions, sharpness, voice)?
Things such as teaching new girls to stunt will take longer than just checking off tumbling skills, as will having girls learn sideline chants/cheers to perfect vs. just giving a limited time to learn something and see who picks it up.
Our typical tryouts were similar to the post above......a Mon-Thurs of practice and then the Tryout immediately after school on Friday separated by squad (9th graders, then those 10-11th graders going out for jv, then 10-12 going out for varsity). Schedule looked a bit like this, though it could always be adjusted depending on how fast things were picked up:
Mon- Introduce the material (show cheer, show dance, show jumps, show tumbling requirements for each squad), start teaching cheer (words first then motions), review review review! During this day, those that were trying out for varsity get pulled to the side in small groups to check off a tumbling skill requirement (better to get it out of the way on the first day than to have kids go through the whole clinic thinking they are going out for varsity and then crushing their dreams on Thursday).
Tues- review cheer, start dance to eight counts, do a few times to music
Wedn- teach jumps as group then break into smaller groups to help critique jumps, regroup and review cheer, review dance to counts, review dance to music, then go through mock run through of tryout order of skills on floor (group of 3 dances then exits, then individual walks in, jump, tumble to center if applicable, cheer, exit)
Thurs- optional day. Mock tryouts are done by the graduating seniors to help give positive suggestions on skills/build confidence for girls that are out on the floor or have questions about cheer/dance/jumps/etc. After that, we just keep reviewing until time is up.
Friday- allow girls to stretch then quickly warm up any tumbling/jumps, then have them sign in/get tryout number (freshmen would be 1-last 9th grader #, jv would start the next #s, then varsity was usually in the 30's-40's) and line them up. Lead girls to the holding room and then start tryouts. In between jv and varsity there is a judges break (so they can use the bathroom,eat,etc. for about 15 min) and those trying out for varsity are allowed to quickly warm something up again on the floor if needed since they have been sitting awhile.
We never included stunting in the tryout itself because it's difficult to justify judging individuals accurately (aside from he said she said) and it wasn't so safe with the amount of new girls coming in to tryout with no prior experience and limited time to teach them proper progressions. After girls had already made the team, we determined stunt positions.