PVZ is very specific about wording. For example, the Coach zombie says "cannot be hurt for this turn" now with Heroes the only way to take away health is to "hurt" or inflict damage to them. With minions it is different. The cards that say "give a Zombie -1/-1" or "-2/-2" etc. does not count as "hurting" the zombie, rather you are taking away health and strength. These still work even with coach's ability active. In addition, the cards that say "destroy a zombie on the ground" (lawnmower) or Destroy a zombie (squash) will also still work since you aren't "hurting" it but flat out removing it.
Also you can bounce.
