This sounds like a lot of fun Veronica. I assume you are jumping with both feet at the same time? Hopefully that doesn't sound like a silly question. I've been struggling with doing this - probably because I don't trust my body for jumping just yet. I've the lower body and core strength, just have to get my head around it.
What are some other plyometrics you enjoy? Monday morning we were doing jumping split lunges holding a dynamax ball between short sprints and a couple of other weighted exercises.