This is getting pretty long (which is a good thing), so I'm breaking up the thread as I reply (for the sake of my sanity).
It's very easy in TKD to fall into the trap that everyone should be equal based on their belt color. Young kids, older kids, teenagers, adults, and seniors all have different challenges they are facing physically, mentally, and emotionally that play into how they train and what they need from training. Each individual within that group will have other challenges. It is
your responsibility as the instructor to modify the drills for your students if they are unable to do them, not your students responsibility.
Who are you getting this feedback from? Is it from problem students, or from the core group? I'll share you a story I recently had in my cardio kickboxing class. Which is funny, because both feedback are from the same guy.
I had been using my coach's method one day per week. 100 of each punch combo each side, 50 of each kick combo each side. One student told me, "This is boring, I'm too advanced for this, nobody here wants to do this, I want to learn combos, I'm not getting anything out of this."
I tried to explain that even I train this way and I've been doing martial arts for almost two decades now, but he didn't want to listen. I went to the core group of students and asked them if I should keep doing this drill or come up with something new next week, and they all were happy with it. (I didn't just ask if they were happy with it, I asked if they wanted to do it again). I asked my coach what he would've done in the situation, and his answer was, "As long as the core group is happy, #*@! everyone else. You're not going to please everyone."
The same guy, a week or two later, told me that he really didn't like those because he prefers combos that mix punches and kicks. He has a bunch of boxing experience, so he feels very confident in his punches, so he can let it rip on the bag. His legs are injured and he doesn't have the experience with kicks, so he takes his time.
I thought about it, and I realized that there were a lot of people with an injury that really slows down one or the other. One woman had a shoulder injury, another man had a knee injury, one kid had a hand injury. So based on
this feedback (instead of the previous
whining), I have stopped doing that type of class.
As for you and your situation, I have a couple of tips that might help:
- Don't spend more than 5-7 minutes on any one thing. People can only focus for so long. Do 5-7 minutes of kicks, then a couple forms, then 5-7 minutes of some other drill, and so on.
- Start and end with something energetic, and have something energetic between everything focused. Stretches and forms are typically more focused, kicks are typically more energetic. But this could also be mobility drills or something like that.
- Write down a couple different ideas for some sort of drill or mini-game that you can use before or after forms. Something that's not really going to show up on testing, and is more about making people move in different ways and making them sweat. Bring 3 post-it notes with you to class, so you have something to remind you what you're going to do.