That.
Some peoples approach is fundamentally flawed for me:
Agree, and this is where this discussion becomes irrelevant. It doesn't matter what baiting tactics one uses if that is the approach one takes.
It doesn't matter whether it's island, open water, margins..... the rod'll not go if there's no carp there. It's just pure luck what happens.
We need to fish (i.e. bait) where the carp are prepared to feed. It can take time to establish where that is, but once you've found it, smash the rods over there, fill it in, and start getting excited!!!