I use 15# fishing line and an extra pair of hands when needed
Fishing line is not so forgiving but you can not see the line and the look is fresh.
Damian I have a phal bellina and have it in a pot with a wire hanger attached to the top of the pot and it dangles perfectly. I do give my phals good air circulation noting they love to rot and with doing this in the mornings but days end the crown is dry. Another idea, if the rooting system is attached get a wooden basket same size and place inside, the baskets have eye's where you can attach a hanger. Now mind you my phals are not totally vertical and have not had any problems with crown rot (better knock on wood huh), the crown at about 10:00.