Traditionally, yes. I play the slow game. So to speak. That's simply not how things are any longer though. Until recently, only decks that had stack or hand interaction played Surgical. You'd never see a deck that has neither, like DnT, do so since they odds of their hitting what they desire were far too low. That mean counters, and/or discard. Typically those are slower decks, so playing around Surgical was fine. More directly towards your question, I don't feel it's necessary to board directly for Surgical. Diversification seems to work best. Adding a couple of Amalgams to supplement your Ichorids. Running PImp, so that intelligent players seriously have to pause before trying to Surgical a dredger. Running Dread, no targets, vs decks we typically wouldn't. So if we go off fast they have to Surgical Narco. And if more grindy, Bridge. With either single case, it's pretty easy to still get 3 creatures to Dread. And most of the decks running Surgical don't run White. And, yes, Unmask. With the decks that ran Surgical, hitting counters was often as good as Surgical since a Breakthrough could often power you through one. And waiting until you had a Therapy, or just needing a superfluous Black card wasn't much of an issue due to their slower clock. That said, this is no longer the case. Most of the format, at an exceedingly high level when filtering down towards the lesser skilled players, now have the fear of B/R Reanimator. And they're running tons of Surgical and Macabre since, as I mentioned, they have no interaction off the board. Which wouldn't be an issue, except it's not universal. You can see a DnT player running 2 Macabre, 2 Surgical, and right next to them another running 2 Priest, 3 RiP. I don't have a conclusion for you here. This is why I switched to Force. Its certainly not the most consistant, nor resource-light measure. But it does allow me a universal answer to hate from non-interactive decks that doesn't force me to diverge from the deck's primary gameplan.