For ichi (linear): Strike your uke and get a firm wrist lock. Get low as you step through. Keep the torque of the wrist lock applied. Don't be afraid to use both hands and keep them right in front of your face. Make sure you can always see your hands as you change direction. Do not allow any slack to develop on the wrist lock. Stand tall and straighten your arm(s) as you touch uke's fingers to his shoulder blade. Now, touch uke's fingers to the ground next to your ankle. Deliver your finishing strike. Do all those and you will have a very powerful Shihonage.
Haha... I was reading this and thinking "this guy does Yoshinkan" before I read the thing under your name that says "Yoshinkan".