<p>2x 14m^2 GK sonic kites, put together with 7m extension chords.
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Steering was reportedly like steering one very big kite, only depower was weak. So don't do that in strong winds... ;-)
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/59683764@N00">Henning Leweke</a> from Kiel, Germany
CC BY-SA 2.0
<p><a rel="nofollow" class="external text" href="https://www.flickr.com/photos/59683764@N00/2392635322/">GK doubledecker</a>
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<ul><li>Uploaded by <a href="//commons.wikimedia.org/wiki/User:Stegop" title="User:Stegop">stegop</a></li></ul>