After hitting his head on the wall of a cave, The Professor ends up with a bruise on his forehead, the bruise has blood on it. A few scenes later the blood is gone, and the bruise looks like it's healing.
Every time Gilligan falls on the grass-covered ground, it bounces back up betraying that there is plush padding underneath to cushion his fall.
How is the Skipper so sure that the stone is the Eye of the Idol, just from looking at it, if it has been lost for thousands of years?
Given the urgency of their mission, why does Skipper repeatedly delay having Gilligan make the second wish? Why not order Gilligan to say, "I wish that we'd get rescued."?
The Skipper foolishly tells Gilligan to save his last wish to wish for their rescue.
Boom Mic shadow falls on the tree branch with the bird's nest as the Skipper and Mary Ann approach it in an overhead shot.