Note that there is a very wide spread in rents for Class A homes in most areas. 

I think these are simple mechanical valves, so they probably won't help will small leaks, but might help if something breaks wide open downstream of the valve. 

There is no such thing as a market wide "next best thing". 

Double Wide 3bed, 2bth. 1350 SQ ft. 

Try a combination of scenarios to look at it from different angles.

The prices and of these things vary widely (40k-120k) but something around 300-600 square feet could rent for $800-1100/month.Theoretically you can make one of these things meet the 1% rule.

There are a wide array of possibilities and the area of the country for the investment matters.

If the gap is not that wide maybe 20 to 40 bucks a month then it might take a very long time to break even from spending thousands to turn the unit.If the rent is hundreds of dollars a month below market then another new tenant might come in with just a little sprucing up and take the place.

We have finished our demolition (Property had and existing double wide that was in terrible condition) and have set form boards to allow for underground plumbing to begin.

So if you are taking the word "hustler" & assuming that I will travel far & wide searching for the perfect property for you that isn't the case.