{ Please see my notes at the end of this post with some tips prior to getting started }
Just a few notes before you get started: The legs must be placed close to each other in the center as shown in my photos below — otherwise, if you place them far apart on either end of the board, the shelf-wont-fit. Also prior to towing, place a tea towel in between the gap of the shelf and the side of the upper cabinet. This way it won’t sway from side to side. During our trip to Idaho, one of my legs broke off. I fixed it and placed the towel there on the way home and it worked well. I think that if you don’t want to mess around with the towel business, you could just screw in four screws into each leg.