I think of starting my turn from the bottom up, pressuring aggressively with the ankles, knees, and hips, excluding any upper body rotation to put the board on edge. It’s important to have a solid upper body when starting the turn. If you begin the turn with a weak foundation it only gets weaker. I focus on getting most of the turn done above the gate, avoiding the low pressure earthquake, death-chat at the end of the turn.
On the heelside I start by pressuring the heels, pulling up with the front foot toes and driving the back knee on to initiate on the toeside turn.
Tip the board up early, and push on it aggressively. Keep the board underneath the body.
Try not to let the board get away! Drive with the outside arm down and keep the inside arm up to avoid the panel. Push the feet through towards the next gate, squeezing the speed out of the turn and maximizing momentum.
Now you’re in the back seat. Send the upper body back down the fall-line in a lever like action so you’re ready tobegin the next turn.
Hope this helps you rail clean, powerful turns.
Rip it up!