Fasted Way To Cap Azure/Amber

I'm currently trying to find a fast way to cap Azure and Amber lights in Abyssea - Grauberg.

It has been a while since I've done Abyssea but since I'm looking to finish my Ochain, it's become my home.

I can't seem to find any of those murrexs that generally give you large amounts of light depending on how you kill shot the mob, so are there any alternate routes to fast azure/amber?

Mass pulling crabs and CW / AE'ing them down takes far to long.

You can try and get a little Ruby and hope to get lucky on intensive azure/amber

You can also go after NMs as they guarantee a light

Sorry im not much help