The Hog Rider is one of the best troop types for drawing out Clan Castle troops, as it can avoid Walls to penetrate deep enough to reach centrally-placed Clan Castles (and enough health to not die before it gets there). Deploy one or a few to trigger the Clan Castle troops, then lure the reinforcement troops to the corner side, and deploy multiple Archers or Wizards to slaughter them, and then deploy the remainder of your Hog Riders. This strategy is especially effective during Clan War raids. However, Skeletons from the Skeleton Trap and Heroes can also easily kill the Hog Riders, as they can only target defenses, so make sure to have some troops that target anything, such as Wizards, which can swipe out the Skeletons.