Keeping the wing one piece is the best way to go. THe RC guys have been doing this since, like, forever. There are a plenty of strong secure ways to accomplish it. Back in the 70's I converted a Sterling Scale P-63 RC kit to CL and used the take apart feature of the plane with small modifications to make it CL compatible. It was solid as a rock, at least until I packed it in by doing one too many loops. I wonder if any of the guys at Flusing Meadow Park remember that one. By doing too many loops I don't mean the wing joint failed. It was a three line setup and the lines got bound up after the 5th or so consecutive loop.