I think the biggest problem is that you'd be buying something that is going to go DOWN in value. If you got the place for almost nothing, and if you owned the land (and if you had no other use for the land), and if you could keep it rented to steady reliable tenants. See, too many ifs there to do anything with.
A couple of times I've had Realtors try to interest me in buying small mobile home parks, if you can buy them right they can be CASH COWS. Recently an agent told me that it costs about $15K-$17K per space to develop a small park. So, if you had some land and could put in the sewer/septic fairly cheap it might be something to look at.
The ones that I looked at had a simple deed restriction in the space leases that the owners could not rent out their mobiles, without the land owner's permission, which is never given. So when people decide to move up they find that it's real expensive to get the mobile moved, and the market for used ones is almost non-existent. So the owner of the park buys the trailer for pennies on the dollar, and then THEY CAN RENT IT OUT. Pretty neat huh. The returns on the ones I looked at were pretty good but I just couldn't interest myself in that end of the market.
all cash