Hi, Shayne! Thanks for asking!
Actually, I am no longer a paid instructor. The system I taught for/with for almost 10 years, Northwest Athletics Clubs, got bought out by Lifetime Fitness almost precisely a year ago and shut down the Brooklyn Center facility where I taught my two classes per week. A multi-format instructor at the downtown Mpls Arena Club was nice enough to give me her Mon/Wed classes, and I tried to make a go of it, but the participation was just never there. So, I resigned in March.
I do, however, get together with a couple of participants/friends at the Plymouth Lifetime every Saturday, and we really bang.
How I kept my classes fresh with traditional classes:
Never repeat the same music playlist more than 4X per year;
Vary the bpm you are working in; I could do a lot in bpm ranges from 151-160, 125-135 and 135-145 depending on what drills I wanted to do (I was very very much an on-the-beat instructor);
Vary (if you can) the depth at which you are working: the traditional xiphoid depth, or you can do a surprising amount of very productive work at navel depth;
Alternate between music-based classes and music-free classes where YOU are the one setting the movement speed AND the number of reps and/or the duration of each drill;
Actually, I could go on for about the next two years on the subject. It might be more helpful, Shayne, if you are willing to do this, to PM me with your own e-mail address, then I can e-mail you a bunch of drills and workout formats I've cooked up since last year for my Saturday gang. On Saturdays we actually workout squished into one or at most two lap lanes and we're forced to stay almost flush to the shallow end wall because the water is so deep, so what I've done is develop a fairly pathetic number of workout formats with timed intervals (anywhere between 30 seconds to 90 seconds) including jumping drills, long-lever and karate-kicking leg drills, cardio-run drills, run + upper body drills, etc. I use an el-cheapo $4.00 clock from Target to keep the timing accurate. We look strange, but we work totally hard.
I trust I've overanswered your question. I'll look forward to hearing back from you, either via this thread or via PM. I really do have a lot of stuff I could send you.
A-Jock
Anytime!