Re: Shihonage roll-out
Try this. The Uke's hand should be tight to the shoulder, with both your hands on the arm. Your lower hand should be on the wrist and pinning down into the mat but with a slight twist towards the Uke. This puts your forearm in contact with the middle of the Uke's upper arm. Any attempt by the Uke to roll out applies pain to the nerve point in his/her arm (assuming they feel that they can move at all)
You can of course increase the twist (slowly) until the Uke taps anyway. Just remember that it is the Uke's turn next, unless like me, you are the teacher!