1625 used a plastic shelf for a stackable shelving unit. this way when we needed an operator station we just set it on the top of the shelving unit...
i dont have pics unfortunately but here is a link to what im talking about...
http://www.acehardware.com/product/i...entPage=family
we just popped the top shelf off the 4 support columns when we needed it for competition and for in the shop we just used the shelf as the driver station