-
Screw the hooks to a board then glue the board to the wall?
It would need to be a board thick enough for the screws to hold, probably more than 15mm, with a large enough area for liquid nail or similar to hold the weight of coats plus the weight of the board itself.
If this
https://www.familyhandyman.com/list/ultimate-construction-adhesive-test
is to be believed, by the time you've got a decent separation between coat hooks it should hold up...
A DIY question from someone not very DIY minded... I need to attach a set of coat hooks to a wall that I can't drill into because there's loads of cables behind it. Any suggestions? Needs to be able to hold dog lead, a towel and a couple of coats I suppose.