Good on you for asking. LinkedIn's a strange beast - masquerades as a professional network but it's really just social media wearing a tie.
That 15k vs 200 gap? You've already spotted that some things land. Now it's about making that the rule, not the exception. Took me months of failing to figure this out.
Writing that actually sticks
Short sentences. Like this. No fluff. Everyone scrolls on their phone during meetings - nobody's reading essays. Lead with a hot take or a weird question. Don't say "three marketing trends" - say "I reckon most AI marketing advice is wrong, and here's why." Then deliver. People comment when they disagree or feel clever, not when you're just correct.
Break the visual pattern too. One line, space, next line. No big paragraphs. And please, never end with "what are your thoughts?" - it screams desperation. Finish with something open, like "still figuring this one out."
Timing matters, but not that much
Tuesday to Thursday, 8-10am and 12-1pm in their timezone. Monday is recovery. Friday's a write-off. Weekends are dead. Honestly though, timing shifts maybe 20% - the hook does the other 80%.
Your specific situation
Posting the founder's original thoughts instead of repurposing news? That's actually gold. Original opinions outperform. But the packaging makes or breaks it. Grab one strong opinion, make it the first line. Then two or three lines backing it up, plus a weird personal example. Done. Under 200 words. LinkedIn cuts off after about 200 characters in the feed, so that first line has to hook.
How to learn faster
Go scroll your own feed for 20 minutes. Save every post that made you stop. Copy the sentence structure, not the topic. Or just ask an AI to rewrite one of your posts in a more hook-driven style, then compare what changed.
Last thought - impressions are vanity. Comments are rent. Write things that make people want to correct you or add their spin. Controversial but not unhinged. You'll work it out. Just post five days a week for a month without overthinking each one. Volume wins early on.