I have never found a convenient way to secure groovy boards to my Fusion frame table. I presently place the groovy board against the rear aluminum track and use a 12 foot long piece of wood along the front edge of the boards to hold them snug. I use woodworking shop clamps to hold the boards tight against the rear track. This has been less than satisfactory for a couple of reasons:
1. The boards have dislodged and slipped up over the rear aluminum track, throwing off my stitching pattern.
2. My method is a little cumbersome while shifting the groovy boards on wide quilts. I have only two boards of each pattern, so they have to be moved for each pass.
My old (Baby Lock Grace Pinnacle) table had slots cut into the table panels which I believe were intended be used to clamp the groovy boards in place. The Fusion table doesn't.