My big concern is draining the tank and storing the 120 gallons of diesel while I pull the tank.
If I'm going to pull the tank, I'll replace it.
So I guess When there is no magical easy fix, I'll buy the new tank, transfer the fuel to it setting out of the coach, jack the coach, remove the old tank, transfer the fuel back to it, then install the new tank, and fill it from the old tank.
And to add, I'd never drive a diesel leaking coach to a camp ground.
I have a drip pan under the area now, and caught less than a half a cup of fuel in 3 days after the epoxy patch.
So it is still leaking after I placed the patch on it.