It’s better if they articulate the reasons for themselves.
Have an ad that says something like this: “On a scale of 1 to 10, one meaning not at all, ten meaning right now, how ready are you to get help doubling your income?” They click on the scale in the ad. That takes them to a landing page with only another question showing: “Ok, you picked 3. Why didn’t you choose a lower number?” (dynamically exchange the number for their chosen one.) Have a field where they can write their answer.
After they submit their answer, you reveal the sales letter portion of the landing page. At this stage they already articulated to themselves why are they are at least a little bit interested in what you want to offer.
If they picked 1, the question should be: “Ok, you chose 1. What can we do to make you a 2?” You then just collect the answers, (and if you can also their email address), and analyze them to see what more you can do.