Gyaku nage is an elbow leverage throw or takedown. Historically this technique relies on a straight arm for leverage and successful application. However, in a real struggle it is very unlikely that an attacker will give you a straight arm to work with. This is why the technique is rarely used.
In Street-Smart Gyaku Nage you will see modifications to the technique that will make it highly effective in the real world. You will learn both inside and outside applications, making this a highly practical technique that shows up frequently in a real life struggle making it an excellent “go to” option. Make it a point to add this one to your arsenal.