This one is relatively portable; everything is self-contained on the sled. It just needs four anchors points, and it'll auto-detect where they are in relation t

This one is relatively portable; everything is self-contained on the sled. It just needs four anchors points, and it'll auto-detect where they are in relation to each other during the calibration process. A lot of users just have 4 concrete anchors on their garage floor, and they put the sled away in a drawer somewhere when not in use.