Right before Packer and the others meet the trappers for the first time, you can clearly see that Leanne is tied up. She is also clearly tied up during the "That's All I'm Asking For!" song. Right after she ran away, Noon asks Packer if she was tied up and Packer replies that he never ties her up.
During the argument about musical keys, Frenchy says "The relative minor is three half tones down from the major, not up!" The scripted line was supposed to be, "The relative minor is three half tones up from the major, not down." Thus establishing his further knowledge (or lack thereof) of music theory.
When the men are naked under their blankets and Humphrey remembers the fudge it is sitting just under the blanket on his stomach so the sudden realization of the fudge's existence is forced. The fudge would have to have been taken from his pack and placed there after undressing and laying down and if the characters are so starving it is unlikely he would have waited so long to break into it.
During the song "That's All I'm Askin' For!", when the guys are standing in the ling with their arms dancing back in forth, right before it goes to the next shot, you can see Trey Parker (Alferd Packer) mouth the word "cut" to end shooting.