Did you know that you could build an infinite number of Port-a-Fort towers by duplicating your Port-a-Forts using a simple glitch in Fortnite? In order to do this, you need to have a Port-a-Fort, and all of your inventory slots must be entirely filled up.
Then, put some item in front of you and be prepared to throw a Port-a-Fort. Now is the tricky part: You need to be able to throw a Port-a-Fort and at the same time press E (or the X/Square button) to swap the Port-a-Fort for an item that's in front of you.
What should happen is that the Port-a-Fort will initiate the tower building and swap with the item by dropping in front of you simultaneously. Using this new glitch, you will be able to build infinite Port-a-Forts in Fortnite.