Jackster, will let us know.
I did find these:
A Scientific Anglers Mastery XXD WF5F floating fly line of 32 meters length was used in the test. The competition version of the XXD, which has the same belly length as the ordinary version and four meters more running line, has been the most popular of the four allowed lines in the 5-Line Cup. The XXD-line has a long belly-more than 20 meters-compared to "ordinary" WF lines with belly lengths that are typically slightly more than 10 meters. The mass of the XXD line also slightly concentrated towards the tip which delays and enhances turnover-a definitive advantage in distance casting. The XXD is in our opinion best suited for experienced anglers since you have to aerialize most of the long belly in order to get the most from shooting."
8 rods - 8 Casters
RIO Gold Tournament - Freshwater Fly Lines | RIO