Hope you dont mind me butting in again. But may I tell you a few things Ive found with gyms and sports halls.
The 1st is re the hooves. On some surfaces the black rubber can leave marks and they dont like that. The worst case is when you arrive you may be told 'oo cant have them on the surface' or just not permitted back.
There are 3 solutions ( ive tried them all) 1st put 'real' sox on the hooves and secure with elastic bands or cable ties. But be warned cant be used on nice shiney wood surfaces. 2nd put trainers on the hooves, you may remember Muffin Man did that for the London meet. 3rd ask if they have an indoor cricket whicket they could roll out and use it as a runway. Its good to have these solutions to hand if you 'phone other gyms and they bring up the problem --sounds like you know what you are doing and more likely to get a 'yes'

Next, to add variety, for warm up and for people who may not want or may not be ready to flip ( and so may be put off going along). See if the gym has any 'foam blocks', used in gymnastic practice and in creches (

). Can be used to jump over both for height and for distance and, laid in a row combinations. Plus if put infront of the main crash matt may be used to encourage 'jumping-up' before atempting the flip. Rather thean peeps trying to fling themselves foreward.