I ordered two sets of T-slots, which was more than enough to cover the entire spoilboard. What I did was place the 36" sections all on one side, then left a 2" gap and sawed a section from some of the remaining 36" sections to fill the remaining area on each row. The photo I’ve uploaded should help you understand what I’m talking about.
The thing I like about having an open slot in each row of T-track is that it enables me to insert a bolt at that point, instead of only at the ends of each row.
