This tatic if best at round 45+, at that point All the zombies on that round will be following you. SO you dont have to waste you Wonder waffle on groups of 3 zombies at a time.. what i recommand is doing that tatic, but first donig the Comm Room one (if you dont know what that is, just find out for your self. It is one Nextgen). I've gotten to round 113 donig only the Comm room tatic with only two perks, Jug and speed cola. I used the WOnderwaffle and browning for dogs. NO glitch's!