[Nate Smith]

I think the main reason for the 2nd bullet in GM20 was to prevent teams from reaching between the plywood decks and pushing up on the upper deck to lift the goal. Thus, for goal interaction, I read it as follows:

-You can attach to the following surfaces:
*12" steel pipes
* pipe flanges

-You can push WITHOUT attaching to the following surfaces:
* VERTICAL face of stainless steel angle

Any other contact with the goal must fall under the rules listed in GM20.