Why do we not apply the din of gud achis to a mechitza teluya such as in the case of the mat which is hanging. The rule of gud achis seems to have been applied in the case of the basket situated atop a pole.
The Gemara in Shabbos (5a, 101a) that says that Gud Achis applies to a basket situated atop a pole is the opinion of Rebbi Yosi bar Yehudah who does not hold of the problem of "Beki'as Gedi'im". We hold like the Rabanan who maintain that Beki'as Gedi'im will invalidate a Mechitzah.
Yours, Mordecai