Looks like we discovered the reason for the hood issue today. Eric and I removed the hood and did some measuring on the angle of the hood hinges. It seems in the effort to get the back of the hood down, the hinge was basically "bottomed out" and pointing upward. So we were putting the hood in a bind when we were closing it. Thus, when it got hot out in the sun, the bind caused the supports to give way.
Self-inflicted wound here... We were able to adjust the hinges with the hood removed so that they sat down more naturally, and when we reinstalled the hood, it lays down much better (except for the leftover bow in the middle).
Eric thinks he can cut into the channel that forms the support and reinforce it with some aluminum, then re-glass over it to make it looks ok. That sounds better than having to acquire a new hood and having it repainted! So I'll let him have the car back next week to start on that. I stole it from him for the weekend to drive around and "tune" a bit. Yeah, that's what I'm doing.