Modifying Phallosan Forte for Hanging

I was certain I saw a thread in this forum a year or so back but can no longer find it when searching. I’d like to start using my Phallosan Forte vacuum cup to start hanging. I don’t feel like the plastic clip on the vacuum cup is strong enough even though I plan on eventually only getting to 6-7# hanging. Has anyone modified their vacuum cup or recall seeing the thread of how others modified their phallosan forte cup to use for hanging?