To address one of the points your interested in herb which is number one, with the left hook its the initial explosion starting from your foot that should start the movement of the pelvis (this is assuming that the left hook has been set up) bending the left knee and exploding from the left foot in sinc while your right foot is on the ball of the foot to allow a tiny pivot if necessary and to generally reframe from planting the heel which will stop the pelvis rotation as you get around to a point generally putting the brakes on the shot thnik of it like leaving up the handbrake in your car. the arm should be lifted into placement parallel to your pelvis simply lifting the elbow. and shortly after the initial explosion of the left foot is when it should leave from your side to sort of hitch a ride on the momentum just created by your legs. if you start the movement with your upperbody first i would say youll tend to throw a few arm punches now and then and might throw yourself out of sinc with the pelvis rotation, your upper body is mainly slow twitch when compared with your legs. if the legs are set up properly and in balance with good posture and placement throughout you have a solid base wound up ready to use your limbs and joints making sure non of them are going to stop you from getting a good pelvis rotation. (all hooks should be thrown like this the only difference with range occures from the elbow and what degree it needs to be bent at for a short hook or long range you simply dont bend the elbow as much, the only difference in hooks at different range should occure at the elbow in what degree it is bent at, the target is the next thing that changes which doesnt effect how you should throw the punch barring the elbow. close range your more than likely going to get the side of the head if your square on with your opponent, hopefuly the chin. whereas at long range the hook can be throw directly into the face/nose on one of the same targets you might have for a jab this is assuming the hook has been thrown as ive instructed above.)

Sorry for the mess of a post herb, i havent got time to finish it or tidy it up, hope this helps, allthough the credit goes to my trainer scrap im only saying what hes taught me. hope im not giving too much away scrap i just thought it might answer some questions on ''getting the hip into the shot'' i know you just dont have time to respond to these types of questions as it could easily turn into an essay to elaborate it properly lol.