I'd say to join a Scout Troop somewhere - you have instant "trail-cred" since you are a thru-hiker. Don't want to go every week? Be a Merit Badge counselor - any and all outdoor type Merit Badges: Backpacking, Hiking, Wilderness Survival, etc. Volunteer to lead a small(ish) group of Scouts on a week long section hike of the AT near you. Check with your college - will they give you credits for the hike as life experience? If not, try to change the policy so that they could and will.