From my own testing, I find packing tape to be the lightest way to cover a wing. Not the bi-di, but regular 2" colored packing tape. I use 2" bi-di over the spars and the LE and TE and colored packing tape everywhere else. I also do hinges from the colored packing tape. It's light, it's strong enough, and it's the easiest thing to field repair there is. When I hinge, I do an over-under type thing with strips of tape stuck together, then do the top and bottom chordwise strips. It totally eliminates the vertical play on the hinge.

I do this on all my Open class planes (including ssc)