For three months I turned my LinkedIn account into a slightly sad little laboratory. Every week I published two posts on similar topics with deliberately different opening hooks, then logged impressions, engagement rate, and profile visits into a spreadsheet I named, with full sincerity at the time, 'hook_science_FINAL_v3.' Twenty-four data points, six hook categories, one increasingly obsessive marketer refreshing the LinkedIn analytics tab like it owed him money. The results came back less subtle than I expected and a great deal more useful.
The only reason I could even run the experiment is that I wasn't writing ten hooks by hand each week. Doing that manually would have taken longer than the entire experiment was worth, and I'd have quit by week two like every other content experiment I've ever started. I used the Ten Hooks, One Topic — Scroll-Stopping First Lines for Any Social Post prompt to generate the options, then picked two per week to actually publish and pit against each other.
The setup, honestly described
I fed the prompt my topic, set the platform to LinkedIn, the audience role to 'B2B marketing managers,' and the tone to 'sharp, slightly skeptical, not a guru.' Grok 4.1 Fast Reasoning returned ten labelled hooks in a couple of seconds — and the speed genuinely matters here. Because it's fast, generating hooks adds maybe four minutes to my writing process instead of forty, which is the difference between a habit I keep and a habit I abandon. I'd star two of the ten, write the full post under each, and schedule them on different days so they weren't cannibalizing each other's reach.
Why a fast model and not a 'smarter' one
I tried this with heavier reasoning models too, and the hooks were marginally more polished, but the latency quietly killed the habit. Hook generation is a high-frequency, low-stakes loop — I'm going to throw away eight of the ten regardless, so I don't need the model to agonize over each one. I need ten decent options instantly so I can apply my own taste and move on. Grok 4.1 Fast Reasoning is built for exactly that kind of fast, casual, current-feeling loop, and the punchy social register suits it. The right model for a job isn't always the biggest one; here it's the quickest one that still understands how a feed actually reads.
What the spreadsheet actually said
Some of this confirmed what I suspected and some of it genuinely embarrassed my instincts. The big takeaways held across all twenty-four posts with enough consistency that I now treat them as defaults rather than hypotheses, and I'd hand them to any creator before they wrote another word.
- Counterintuitive claims won on raw reach, sometimes by 2.8x over my baseline. The mild discomfort is the feature, not a bug to sand off.
- Specific-number hooks were the most reliable — never the single top performer, never the bottom, always solid. The index fund of hooks.
- Relatable-failure hooks ('I used to do this wrong') won on comments by a mile, because people will tell you their own version of your mistake all day long.
- Curiosity-gap hooks underperformed badly in B2B — to a professional audience they read as clickbait. I'm reliably told they crush it in career-advice accounts, which is the whole point: audience matters more than hook type.
The hook I'd write by default, and why it lost
Left to my own devices, under deadline, I open posts with something like 'Here are my thoughts on attribution modeling.' Across the entire experiment, that flavor of hook landed in the bottom third every single time without exception. Not because the thoughts were bad — because the first line gave the reader precisely zero reason to keep reading. The prompt's real value isn't that it writes better sentences than me on a good day. It's that it generates ten options, which forces me to pick the right hook for the specific post instead of reaching for the one comfortable hook I default to when I'm tired and behind.
Honest caveat: roughly one in ten generated hooks is too try-hard — the 'STOP. Read this.' energy that makes me physically recoil at my own screen. I just don't pick those. The model gives me the menu; the taste stays my job, and that's the right division of labor. These days I run the Ten Hooks, One Topic — Scroll-Stopping First Lines for Any Social Post prompt before writing literally every post, and I pair it with my One Article, Seven Native Posts repurposing prompt so each of the week's seven posts gets its own tested first line. Grab the Ten Hooks, One Topic — Scroll-Stopping First Lines for Any Social Post prompt on Prompt Dock and run it on the post you were about to open with 'I wanted to share.' Whatever else you do — please do not start with 'I wanted to share.'