We've had a couple from the surface at night from Narooma but the daytime fishing is best. We've been hooking up on our first drops out of Mallacoota and boats around us are all getting several hookups each day most days.
I would of thought if Browns had plenty of swords more would be getting hooked up deep dropping, my thoughts would be to look for kinks and drop offs around the 500m mark and target them on the bottom through the day. Night time sword fishing is tuff going on most people (even those who don't normally get sick), a rocking boat with no horizon to see can take some getting used too. When you get pesky blue sharks etc swimming all around the boat gear can soon end up in a huge mess.
On the other hand seeing the fish and squid that are attracted to the surface lights is amazing, especially things like flying fish that my daughter likes to scoop up is her net.
Jon