We tried two of these tonight: one with a wrist grab and one with an elbow push.

I’ll comment on the elbow push because it is more effective on a guy who strikes and pulls his arm back right away (like the way boxers fight).

Assume hidari-ai-hanmi. The tsuki comes in and you slide to your 10 or 11 o’clock with your right arm and tegatana blocking your mid-sections while moving off the line of attack.  This is so the fingers of the right hand are facing upwards on the block.

Also, go deep! A little slide wont get you far enough behind uke‘s recoil to jam him if you have to.

The left hand finds uke‘s elbow and attaches itself to the elbow.

In one motion, nage’s hips rotate so nage will eventually face the same direction as uke; the right, blocking hand’s tegatana is now on top of uke‘s tsuki wrist; the left hand on uke‘s elbow extends in concert with nage’s hips rotating and uke‘s momentum from his thrust.  If timed correctly, as with the physics of tenbi-nage, the uke should feel compelled to continue on his original strike path and be led in the vertical direction of the extension on his elbow; hopefully down.