Mate, TBH, This is your first posting on this site.. Any. WGs Worth their salt will be mighty suspicious of a zero history potential customer looking for something Non-Standard .... And yes they do use this site, but monitor it for feedback and intelligence, rather than to drive custom.
If I were you, and I had a reasonable AW profile with history and feedback, I'd be making approaches thru that site and maybe even a Reverse Booking request.
Respectfully,
Roj