Dear Rick from a couple episodes back,
Why in the name of Zarquon was every able-bodied person not armed to the teeth all day every day starting a few minutes after you came through the gate? Did everyone except Ron forget the Armory until Jessie's house?
Yes, stand watch on the fence, but not with one rifle and not solo. Get the ASZhats off their asses, fuck the machete Tai Chi class, and start some target practice.
You're worried about noise concentrating Walkers in a week spot? How about more than one watchtower?