A quick peak at the 2015 QU4D sails on windy, but pretty flat Maui summer slop. The new QU4Ds have the same outline with a slightly modified luff curve to place the draft a little more forward. The sail is definitely stronger built with the same fabric layout as the KS3. Color shown is C1. Jeff Henderson and Kieran Devaney were really overpowered sailing 4.7m and 5.0m respectively in too much wind gusting to 35mph.