The choice isn't a great one. Boris is a risk. Not a Trump-level one. But a risk, all the same.
The trouble with Hunt is that he voted Remain. And as we discovered with Theresa May, the folks who voted Remain won't pull the UK out of Europe in a way that resembles Brexit. Even if they make sounds which appear to suggest they will.
First thing Hunt would do if elected leader will be to make the Remain argument - leaving the EU will be economically disastrous.
Whereas the actual price of sovereignty and democracy is likely, although not inevitably, a recession. Countries have those every 5-10 years anyway. If we are to have a recession, one that aligns us with the global instead of the EU economy seems like one with some benefits as well as costs. The global economy has been growing faster than the EU. We'd emerge from the recession tethered to that.
But set aside the primacy of economics. The folks who voted Remain simply don't understand the mindset that sovereignty matters more in the long run than the next economic cycle. The EU has sucked the strength and independence out of parliament. The conservative party members are looking for a leader who will get them back. Flexibility is more valuable than homogeneity.