I know this plight. It's taken me years to get amongst those boards, the trick is university career links pages. They are not that easy to come by but their weight really is a great foundation for most niche industries.
Even then, you'll not be able to push Indeed aside. Google's update to slim down similar pages in the SERPS did almost nothing to that site and often I'm looking at 2 or 3 on the first page.
Godspeed.
