I'll be making one soon. Here are some links to some who have made it; good info on the published article by Linda Moore:
ReadOz - Southwinds Magazine
(click on "read" link)
Picasa Web Albums - Linda
- Stack Pack "folder" and other projects
Newport 30 owner who recently made and installed one:
Picasa Web Albums - Carl - Sailrite Stac...
If you want the seams to be less visible on the pack; use the V-92 thread in the same color as the canvas. The sailrite "kit" only comes with white thread; so you might consider buying the kit and a spool or the correct color; or asking to swap spools and pay the difference in price.