Catching the fish....`
Catching the fish "the right way" shows that Vic was more interested in teaching Alan how to "be a man" than anything else... Alan made a trap for the fish, and Vic said it wasn't the way it's done. In reality, if you got stranded on some island or lost in the wilderness, Alan's home-made trap would absolutely save his life, as "wrong" as it may have been.... It's an example of how obtuse Vic was being. Look, I'm not saying Alan wasn't a sissy, but who cares? Does every boy need to grow up to be "a man's man?"
I'm not disputing that Vic was trying to teach Alan and the rest of the kids how to... well thats just it, what IS he trying to teach them? Because if it's survival in the wilderness, he sure effed up with Alan and his trap... That's what I just don't get.... Maybe it wasn't "adventurous" enough of a way to catch fish... Again, not "manly..." That's really the only reason I can think of that Vic would be so mad at Alan...
I'm not saying Alan should learn that there will always be someone there to save him, but at the same time, he's a minor (looks 14 at most in the movie, thought he may have been slightly older)... And some guy who isn't Alan's parent or legal guardian should NOT be so cavalier about an underage boy's safety. That's just asking for trouble.