While working on the book about the Prahran & Melbourne Tramways Trust,
Ian Brady and I searched hard for a pic showing the loop at Luna Park in
use. We didn't find a suitable pic. In fact, we think it was probably
only used for storage of trams at busy times, not as a regular terminal
loop.

Here's a pic I found today - the loop is just opposite Luna Park at the
left centre of the pic.

http://tdu.to/Aerial-view-StKilda_SE-across_LunaPark.jpg

You can see a tram sitting at the normal terminus - which was still used
for some years even after the loop was removed.
See: http://tdu.to/a2867/StKildaBeachTerminus_11-10-1969.jpg

At right of the pic attached to this email, just above centre, you can
also see the old terminus of the line down Park St - which deviated into
Mary St and Beaconsfield Pde to join the tram line in The Esplanade.
That deviation was removed in late 1959.

Mal Rowe - still searching