The floating spar design employs a fixed spar in each wing half that cross through the fuse and into the opposing wing. The load is therefore carried in the wings instead of the fuse (in large part). On the 330L, there are only four "points" of attachment to the fuse for both wings ... two bolts into each wing root. The spar does not touch the fuse at all.

My assumption would be that the Skydancer has a similar design, although the pictures on their website make it look like they might be slightly different than the 330L.

JS