Here are some Pics from the Gold Coast Titans Tackle Clinic 

There are 2 sequences here from different angles. Both sequences are demonstrated with Luke O Dwyer. We play this tackle as a recovery to the man with the ball winning the underhook in the tackle and putting me on the back foot. I go with the forward drive of the offensive player overhooking his underhook and taking him down and gaining side control. 

This tackle turns from a loss of control on initial contact to a win on the ground. If the elbows are controlled he will always end up on his back thus slowing the play the ball.

View these pics in order to watch the progress of the tackle.