Not sure if that’s possible anymore.
770dps * 19s concord response time * 4 = 59k EHP.
Hulks will likely have more EHP than that now, see this thread.
So let’s take 2 more catalysts and make it 6 catalysts per hulk. If the hulks aren’t brick-tanked, they might die.
Next, I’ve heard rumours that bumping an Orca doesn’t have much effect anymore when the Orca is using the new industrial core. I haven’t tried it myself, but I can see how it may work. I’d love someone to confirm this.
Seems it’s a lot harder to gank a mining fleet now. Especially now that Hulks can be off grid much faster with their agility and mass boost.