The one line only works for me if it carries its own kill switch. Mine reads like: USDJPY, buy dips above last week's low, void on a daily close under it.
Without the void clause I caught myself defending a Sunday opinion on Wednesday out of pride. With it, the sheet tells me when to drop the view, which is half its value.
I also tag each line with one of three words: trend, range or wait. Over roughly twelve weeks my wait lines saved more than the trend lines earned, mostly by keeping me out of pairs parked on a weekly level.
I would push back a little on keeping the weekend review quick. I score every line 0, 1 or 2 per pair, and after two months my EURGBP views were clearly coin flips while my yen views held up.
That tally decided which pairs got dropped from the sheet entirely. Five pairs takes me about twenty minutes now, most of it spent checking event times.
Does anyone write the bias as a level to fade versus a level to follow, rather than up or down? I suspect that framing suits scalpers better than a directional call.