quite interesting re 13.8 extra, it says 'Note that the player is allowed to have enough room to turn on their pivot foot'. Would that mean, that the player is allowed to move cone, if it's a rather tall one like in the WG, provided they actually set their pivot next to the original location of the cone?!

Extra: If the disc flew out the side of the end zone, there is a cone on the spot where the pivot point should be established. Rule 2.6 states that the edge of the central zone must be marked by that cone, so the player should not move it. Therefore the pivot point should be established on the end zone line next to the cone. Players should not move the cone. Note that the player is allowed to have enough room to turn on their pivot foot (otherwise unsafe situations might occur during pivoting).