When Gus is using the "hover technique" on one of the football players at the football facility, he is shown wearing the uniform of the training intern, aka a T-Birds polo and visor and khaki pants; however, when he meets up with Shawn in the next shot immediately afterwards, he is wearing his usual, in this case a yellow dress shirt and black pants.
The scenes inside the football stadium show the field having a 55 yard line indicated with a "C". American football fields midfield are 50 yards, and the field in the show is in Canada, where it was filmed.
When Shawn and Gus meet with the coach for the first time, the depth chart on the whiteboard shows players with numbers that are inappropriate for their listed position, e.g. 84 for a CB, and defensive lineman with numbers in the 80s.