I'm using free for all.

The problem I have found is that trade skill recipes that are Bind on Pickup can only be seen by characters that have the relevant trade skill.

Are there any addons to help with loot ?

It would be ok if you could do Master Looter and set the threshold to grey items (think you used to be able to ?) but that doesn't seem an option. Seems the only options are either free for all, where you will inevitably miss some of these BoP recipes, or a combination of round robin, which is a royal pain.