Originally posted by CallidusVir:

Originally posted by Tevirik:

You have to go to your spawn area where there are 5 or 6 erected stones.
In your inventory, you put the trophy in one of the quick access slot, for instance 1.
When you are in front of Eikthyr's erected stone, you press 1 to hang it.

After that, you have to press "F" key to activate your power.

It just keeps marking the location if I press E, or if I try to quick slot with it it says it's not compatible.

You don't need to put it in hotbar, it can be anywhere in inventory. You just have to aim at the hook and press E. Are you sure you are aiming on a trophy hook?