I've added John Anderson to the forum's historical committee section. He designed and flew a swept forward wing Hang glider in the 1970's or 80's (not sure) and incorporated some nice features for transportation for what looks like a ridged wing but packed away like a flex wing.
He also used for "safe splat" bicycle wheels on the control bar base tube.
Check it out along with his descriptions of the mechanics of the glider in the history section of this forum.
Frank Colver