I started at the front, on the curb side in my case, worked across the front using a few boards cut to staggered lengths. From this starting point I came up the curb side with my next "row" of boards across, now having my staggered pattern established. My Caravel
has curved sides and the cabinetry has a slight taper to the aft. So, the layout is not square and you cannot just lay the boards parallel to the base. I tried to scribe the pattern on the outside boards but then decided that the amount of curvature was such that if I aligned the board pattern to the centerline of the trailer I was only looking at a less than 1/2 inch gap at most. This gap could easily be covered with my 1/4 round base....and I avoided the agony of trying to cut the Pergo in a curved pattern. So, thats what I did. The gap also served as my expansion space at the sides. The worst job was that last board in the aft, street side corner. Trying to get a tight fit and clicked into place was not easy.