To the undecideds, I'd ram home the anti-democratic nature of the EU. Do 5 minutes of research and you'll vote out.
I'm not a fan of Gove at all and never have been but his point was valid - so called 'experts' are not always right, and that applies to both sides. As someone who is a retired lawyer I can tell you that an expert's opinion is often disputed directly by other experts. It's actually not a numbers game, it's the quality of the data and the arguments that count. All of these experts have made assumpitions about the economy, such as the Pound falling, interest rates rising and so on, and that leads to a theory based on 'If A happens then B could happen, and if B happens, C could happen. It's complete conjecture.
Then you have vested interests that cannot be ignored - the IFS having a chunk of their funding from the EU - they may lose staff if we Brexit. Mark Carney made his name at Goldman Sachs and still has high profile friends there. They are one of the biggest contributors to the In campaign. It stinks to high heaven. This is why he intervened to such an extent that he has breached his contract of employment and should be sacked.
Remember, these are the same experts that have failed on many occasions to predict anything. I remind you that the Treasury 'experts' were trusted so much by Osborne that he created the ONS because they "could not be trusted and allow Chancellor's to fiddle the figures". Now they are put forward as the height of economic acumen.
As for Faisal Islam, I thought he was equally obnoxious to both Cameron and Gove. It wasn't 'robust' a la Paxman, it was downright rude. In both interviews he didn't wait for an answer and the viewer simply couldn't hear the response at all. That's not interviewing. He was clearly out to make a name for himself rather than get answers and he's done that. Cameron came off worse and was unable to do what Gove did brilliantly, and as a former advocate I can tell you this takes skill:
http://www.express.co.uk/news/politics/676719/Sky-News-debate-Michael-Gove-Faisal-Islam