This will allow your interior defenses to concentrate on the Hog Riders. Another way to defend against Hog Riders is to exploit the fact that they will attack the closest defensive building. You can arrange your base in such a way so that you have high-powered defenses on the inside and lower-powered defense on the outside, with a layer of resources in between. That way, the Hogs will (in theory) complete a loop around your base before being able to attack your interior defenses (Inferno Towers, X-Bows, etc.), by which time they should have all been killed by the interior defenses.