The VRCFury setup is relatively simple.
Find the VRCFury prefab in the ‘RuneFox/Bopper/_Prefabs’ folder and drag it into the scene and then onto your avatar’s hierarchy so that it becomes a child object of your avatar.
If your avatar is not at scene origin and you need to move the Prefabs find the ArmatureTarget gameobject in the Prefab and move it to where your avatar is.
You can scale either the ‘Boppers’ parent gameobject or the individual ‘Left/Right Bopper’ gameobjects.
Next move the Left and Right Bopper GameObjects so that they are over your hands. DO NOT move any of the child gameobjects, doing so may result in odd behavior of the asset. Try to place the bopper so that your hand is in the middle of it. See the image below for an example.
After you have positioned the Boppers you should be good to upload the avatar.