When we played El Sal in Red Bull arena last GC there were about 500 trinis max in the stadium my estimate; yesterday we were somewhere in the 1 to 2k range; let's face it, there isn't much of a football culture w/our fans, so when there is momentum around the team and they are progressing more folks will come out. Had we made the final in Philly you'd probably get to around max 5k -10k range I would surmise
Edit: many forumites were there: Big Dawg, FF, Bally, Trini Madness, as well as many other non-members