You no longer have to worry if you want to go up something with pipes or tubes or equivalent elements. Mounting using a loop is the solution, but not with a knot in it. This is certainly not possible with steel wire and with perlon wire such a knot does not look very attractive.
GeckoTeq offers the self-locking loop hanger here. Insert the wire at the bottom, back over the tube and then insert the wire on the other side of this clever solution. The adjustment is also simple, because this aid is self-braking and always reusable. And also always in the place you want.