Joseph - We have a lot of fawns that seem to be more willing to sample plants than the adults. I think that if I'd planted a lot more then they would have lost interest and left more of the plants alone.
Su - That might work. However, I've never been able to get any melons to set fruit so it's a problem that I currently don't have!
Greg - I'm not finding any seeds for that particular cultivar, only a C. maxima called
Zapallo del Tronco. It doesn't look as thorny though.