The upholstery and canvas reconstruction of this 1989, 29 foot Formula is the work of Natalie Kraft, owner of Two Rivers Canvas, Prescott, Wisconsin. The pictures show her use of the Micro tool to attach zippers to plastic during the pattern making process. Using this method will ensure a perfect fit when the strata glass or isinglass is cut, and will prevent scratches to the glass that often occur while cutting and fitting the actual product on site.