If he's only got three seamers, they ideally need to be fresh. Which points to batting again and bowling tomorrow morning, when Patto might be back - and the forecast is quite good.I suspect if he only has three available seamers he'll choose NOT to enforce the follow on..
Rightly or wrongly - i'm not sure.
But, they are still quite fresh, Durham are on the back foot and why take a chance with the weather.
Finely balanced: I will back whatever the captain and coach think.