Killzone timing: do you trade fixed clock or volume bursts?

[LondonScalper]

Killzone timing: fixed clock versus waiting for volume bursts.

I have tried both. Fixed clock (e.g. first 90 minutes of London) keeps me honest and stops all-day drifting. Waiting for a volume/pace burst feels smarter until I invent bursts that are not there.

Hybrid I use now
Clock defines the window where I am allowed to look. Inside the window, I still need pace and spread to look tradable -- a dead open stays flat even if the clock says "killzone." Outside the window, I need an exceptional, pre-written reason, not a vibe.

Pure clock people: how do you handle lifeless opens? Pure burst people: how do you avoid staring until you force a trade?

I am interested in rules that survive a quiet Tuesday, not just a trending Monday.

Volume burst definitions should be written: e.g. pace clearly above the prior thirty-minute average and spreads still inside the filter. Vague "it feels alive" returns you to clock-only trading with extra steps. If you cannot define the burst, you cannot audit it on Sunday.