Gecko onto plasterboard / stud wall?

[Damon]

At the very least, I would use the expanding toggle, or butterfly anchor bolts. I would not trust any fastener into drywall/ sheetrock, plasterboard alone. If you can find a stud, then a conventional lag screw would do the job solidly. There is the leverage as well as the vibrations to consider. And the cost of the Phantoms.