[EricH]

As I recall, there have been only 4 supports per side in the past. Each gets a trip guard. They have been placed, IIRC, only between the gates.

What the hint says is that there is now either another couple supports per side, with associated trip guards (green rectangles), or that there is now a gate between existing support/trip guard locations. This could simply mean that they are trying to get everyone on and off the field faster.

It could also mean that there is something big in the corners, and they moved the gates out a section from the ends to compensate. You could, in fact, do that with the field that was used last year, IIRC. Just switch two sections, and you're set.