skribs
Grandmaster
Oddly, in the mainstream NGA curriculum, there is ONLY a rear leg side kick. The round kick comes in both rear leg and slide-up (front leg), but no front leg version for th side kick. And because of this, you rarely see a side kick of any sort in sparring. I've been trying to develop my front leg kick to usable standards.
I'd be interested in seeing a video of what you mean with #3 - I'm not quite picturing what you're describing here.
I need to go back and look at #4. We have a crescent kick, but it's pretty much never used (and I stopped teaching it some time ago). This might open up some possibilities with it. Maybe time to reconsider that kick.
None of these videos are mine.
Non-Rear Leg Side Kicks:
Step-Behind Side Kick (uses original front leg)
Check Side Kick
#3 - Watch at 1:30.
Crescent Kick to Side Kick (I really want to emphasize that this isn't my video)