Defining Competition Scoring Moves

You may want to have a look at the Australasia forum where we are presently trying to define (in English) some of the usual BJJ scoring moves.

Any help would be appreciated.

Question:

is mount usually scored when the person being held has one arm/shoulder behind the dominating players thigh? Think like a triangle set-up from mount...

as long as they establish the position(5 secs), id think so.