It seems like over a few years of turnovers this could save you if you are unwilling to DIY change out cheap locks.Might be worth it for AirBnB or hotels and motels where you need to change lock codes daily or weekly.

Real estate is not a complicated business...just takes daily discipline/persistence.No savings but good salary - Stop spending and start saving.Decent size 401k - Borrow from your 401k.Passion/motivation - Motivation is garbage (short-lived).

I find it hard to believe that anyone doing any volume never has a tenant pay late and never has a tenant do damage to a property. 

This states the daily rent incurred by the resident when they remain in the unit after the lease expires and is not renewed.

(craigslist, FSBO, zillow, etc. as well as placing signs on the street corners in the area) You should be receiving a high volume of calls (I like to see at least 20 calls a week) if you expect to fill a high amount of vacancy at a park.

I work at things from a volume angle for a lot of reasons.

-I do have a small savings (almost enough for a down but not unexpected expenses) so I continue to save until I find the deal I can't pass on-renting my current property and saving every dollar that I can towards my first property-I have a "house hack" situation that's working out well-using a HELOC for cash reserves-I am looking at and running the numbers on properties I find daily.

It is the daily activities that you choose that really make the difference. 

If you’re doing the type of volume you mention, it’s worth getting in contact with them and worth the fee you pay them to find the best loan terms.

We have to use owner occ examples here since so few market to REI, but here's another example: Top mortgage bank in the United States by volume.