Cheers bro! Cost isn't an issue, the trip is a freebie. I just wanted to know a little about the diving before hand. I did some searches on those dive sites and came up with loads of information, thanks. How deep is the drop off along the shore line? (along the base of the wall)
Elphinstone Reef looks like it should be worth a trip, a nice day out and a good dive

I would love to see some hammerheads, well you never know your luck