We don't need to ask Farage anything.
What we do need to do is tell Farage supporters that Brexit is a success and let him squirm. After all, he's still here isn't he ?
It's a facile debating technique, but it can be deployed to the great unthinking.
"What do you want ?"
"Less immigration !"
"Well we had Brexit. And that fixed immigration didn't it ?"
"But small boats !"
"But Brexit fixed immigration didn't it ?"
and slowly loop round.
The key here is to be a little discerning with your resources. 1 in 3 people don't vote and never will.