Dave,
What are the dimensions for the dowel and overhang arms?
I saw a simple handle design from Warren Kurth's Peanut 1/2A speed ship that was a straight 1/2" dowel about 3"- 4" long with 0.045" wire through the dowel spaced at 1" with a 1 1/2" overhang on the wire. Maybe to simple as it didn't allow for line adjustment, kinda like a fixed point handle. The Moon brothers use a turnbuckle on one line to allow adjustment and that might be what is needed but in a small size.
Best, DennisT