Actually, we are using magnets for the other side. Two narrow, slotted metal rails that you would attach to a wall for hanging shelf brackets. One of them is taped to the opposite shower wall with white duct tape. The other has four magnets sitting on it.
Enter shower, pull curtain liner closed, place it over the taped metal rail and use the second rail with magnets to secure it in place.
Not bad, but you need strong magnets to connect the two metal rails with the liner and the duct tape being in between. Still looking for a better solution.
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