general Shower Stall Question

[THMakin]

I installed oxygenics shower head using the stick on rather than screw on method and so far it's holding. However, the plastic shower wall where I have attached the shower head stick on holder is being pulled away from the back wall by the weight of the bracket and shower head. I have no problem adding a screw or two to the bracket but what method should I use to prevent water seepage through the bracket, around the screws, and onto/into the backing wall?

[GraftonGuns]

Silicone caulk around the screw threads after you pre-drill the screw holes to avoid cracking the shower stall. Then caulk the screws, install, and then put a little bit around the screw heads once they are snugged into place.

[THMakin]

thank you.....on myway to home depot to get the caulk