I bought a house in Milton when I arrived for API, because we couldn't find anywhere else to live after Hurricane Dennis. Rented it out until I came back as an IP nd lived there again. Just left my IP tour and rented it out again. All my tenants have been flight students except one set...and that set was the only one I had problems with. I've heard nightmare tales from other guys renting to non-military locals. There is significant risk. Reasons I think it has worked out well for me:
1) Location, location, location. 15 min. from base and 35 minutes from Cordova Mall. Some studs show up for API and rent an apt in NE P-cola to be halfway between work and play, and then severely regret the 45 minute daily commute for the cookie-cutter apartment that doesn't really afford them great access to local hot spots. When they select helos, they move to a relatively nice, large house in Milton where they can cook out on weekends and make their briefs on time.
2) Tenants MUST be flight students (or IP's, but lots of them buy instead of rent.) Niche market. Choose location accordingly.
3) Couple of property factors:
a) all ceramic tile, except carpet in BR's.
b) slight upgrades to paint, doorknobs, lighting fixtures, etc. Just enough to make it feel a little less like a transient living hut than most rentals.
c) Big backyard with some nice parts and some wild parts, completely fenced in. Great for dogs (remember the tile floors) and/or kids.
d) I negotiate on price and incentives to get it filled right away.