The short answer is that controlled A/B testing on individual listings is rare enough that closing-data comparisons across matched properties almost never exist in published form. Most of what circulates is observation, not experiment, and I want to be upfront about that before anything else here.
That said, the mechanism you are describing is real and worth taking seriously. The water angle and the opportunity zone angle are not interchangeable because they reach buyers at different stages of a decision. A buyer responding to lakefront imagery is often emotionally led, with a shorter timeline from interest to offer. A buyer responding to opportunity zone tax deferral (meaning a federal program that lets investors defer capital gains taxes by placing them into designated low-income areas) is making a financial calculation first, which typically extends the decision cycle and changes who needs to be in the room, often a CPA or fund manager, before anything moves.
If those two audiences genuinely have different timelines, leading with the wrong one does not just affect inquiry volume. It can attract the slower-moving buyer population when a faster one exists, or attract the emotional buyer to a property whose value story requires a spreadsheet to appreciate.
One practical approach some agents use is to run separate marketing tracks simultaneously rather than choosing one lead. The MLS listing anchors on one angle, paid placement on the other, with landing pages and copy tailored to each audience. Whether that actually shortens days on market on a specific property, I cannot tell you with confidence, and a claim that it reliably does would need data behind it.
For the opportunity zone angle specifically, the tax mechanics matter enough that any copy touching them should be reviewed by a qualified tax professional before it goes out.
What is the typical buyer profile you are seeing inquire on lakefront lots in that market right now, mostly individuals or more often investment-oriented buyers?