Assuming you are regular footed. Try initiating your heelside turns by shifting your forward knee toward the front of the board. Because your front foot is on an angle, this will flex the board and engage the sidecut. For your toeside, shift your leading knee toward the tail of the board and press your shin against the tongue of the boot, down toward your toes.
In addition, people who lack the ability to ride dynamically are often keeping their legs static or locked out the entire time. Get lower, flex those knees actively extending the board into the turn and contracting out of it.
You'll notice more experienced riders doing the same thing when they get tired.
Last edited by baldylox; 12-10-2013 at 01:27 PM.