I never understood the Professor. If he could make a generator from some bamboo, rope and palm fronds, how come he couldn't fix the boat?
It was the 60's and smoking all that weed made his thinking a little skewed. After all he had reinvented the hula hoop when they were rescued. As for all the others, I don't think they had a brain in them all together ... besides being stuck on a desert island with Maryann and Ginger was what it was all about.
I actually think Bob Denver said that about the boat once years ago as well!