About Kicking:
(pivot at hip; use your hip and not your knee/calf):
1. Flex (forward)
2. Extend (backwards)
3. Kick down ( major effort)
4. Kick up (relaxed)
About Speed:
(For the least resistance):
1. Toe pointed (when kicking up)/vertical (when kicking down, for more forward force)
2. Leg straight/narrow kick (like kicking in a bucket, or else it will slow you down)