How do you currently monitor what your competitors are doing — and does it actually work?

Genuinely curious how founders and marketers here handle competitor monitoring.

Most people I talk to say one of three things:
— "We use SEMrush" (keywords only, misses website changes)
— "We check manually" (inconsistent, falls apart when busy)
— "We don't really" (honest answer)

I built Compgine to solve this — automated weekly website monitoring with AI analysis of what changes mean strategically. But I am curious what the Product Hunt community actually does.

What is your current process and where does it break down?