It says on Wikipedia (not overly reliable) that the one that scored tonight, Paris Cowan-Hall, started at Portsmouth and went on loan to Grimbsy. Was at S****horpe last year, playing once, and was then on loan to Rushden. Only 20, scored 1 in 7 apparently and can play on the wing or up front, may be worth a punt? Not sure on the others, but don't take this as gospel as Wikipedia isnt always right.
I saw him the other day, I asked him who he was and he asks people to call him Joseph, he was sent by Alan Walker, You all know who he is.
http://www.gillinghamfootballclub.com/page/NewsDetail/0,,10416~2391421,00.html match report from os (as posted on the erith feed) should give you the names of all the trialists should you wish to research them all