When Jack comes out of his house, he tucks his shirt in twice.
After Mark falls into the pit where the bear is, the position of the hat on his head keeps changing.
Angle of the ladder, as Mark puts it into the pit for the bear to climb out.
Mark runs away from the bad guys, trips up and knocks himself out. His hat comes off his head. In the next shot his hat is in a different position.
Position of the trout on the plate Jack gives to Mark.
Mark enters the cabin and says to his uncle "I like it." His lips do not move.