Speaker port plugs

I want to hang my old Dali Zensor 1 on the wall in front of my bed for some casual listening.

Since they are back ported this isn’t very optimal but on the other hand, they have holes for hanging them on the wall.

My question is what I should do the with the ports? Just leave them straight against the wall or plugging them with foam?

I like Port Plugs… And I would defectively use some ok this scenario.
My Dynaudios really need them to not overwhelm the room with bass. They are like 50cm away from the wall but I still have to much bass without Plugs.
Dynaudio provides them with the speakers. You don’t need to stuff then all the way in… Try out what workes best for you.