If it was me my thought would be "Jesus is here - follow Him." But it wouldn't be some hypnosis, mind control, or puppetry. "Drop what they were doing and immediately follow Him" does not imply lack of free will.You need to understand that Calvinists believe we all have a will to choose , but unregenerate man will never choose to follow Christ ,Gods grace must precede the choice to follow him.
In other words, even our will is fallen and must be fixed in order for us to be able to accept the freely offered gift of salvation.
(As an aside to the GRPL: has any of you found that, if you drop the 5 points, and just discuss monergistic regeneration, you get a lot further? I found that, as soon as I dropped the title "Calvinism" and ignored the 5 points, but focused on how "it's all God from start to finish," I was able to elicit agreement from an hardened anti-Calvinist that what I believed was Biblical after all.)
There is no question that God's Grace will precede the choice to follow Him. As a creature (and that's all we are apart from Him) man does not have the ability to say "yes" to God. That doesn't force the situation though. Your usage of "will" is "unusual". Those who are not regenerated
will not chose Him, those who are
will.
That's not free will.