1. Use the handbrake (square on PS and X on Xbox) to try and swerve around him.
2. Learn of some shortcuts and backroads. I know Crystal Lake, Higgins Haven and Packanack have good ones. Using the main roads makes it easiest for Jason to stop you.
3. If you see him shifting towards your car when you're backing up he's probably trying to get behind it to stop it, it can be tricky and takes good timing, but break and go forward when he does it. Pay attention to the mini-map when it looks like he's getting behind it.
4. When he stops the car and is coming over to pull you out, exit the car and he may miss the grab. Another thing that takes good timing.