The all Surface model can be used on not only turf but also hard surfaces such as paved areas and indoors. The angle is readily adjusted using a T Nut attached to the telescoping support pole. To change sides from ‘sane’ to ‘insane’ is a simple process and almost as quick as with the Turf model. There are two rubber feet attached at the front of the Crazy Catch. These provide good grip on most surfaces however on hard surfaces we advise either positioning the support base up against a wall or alternatively placing a weight such as a gear bag on the support base.  Great fun and great learning tool.