Originally Posted by xFullCourtTenniSx
My hips get turned, but all I focus on for the legs and lower body is to bend my knees and positioning myself to hit my shots. On the upper body, I focus on a full turn and I can't really get any more turn than I already am.
Simply turning the hips is not coiling. Coiling is having the shoulders turned at a greater angle than the hips are turned, like a wound spring. A wound spring stores energy. It's part of an efficient kinetic chain. With no coil you have a weak link in the chain.
Look at the hips and shoulders in the vid posted earlier. no coil. I'm assuming you look similar.
Compare that to the following