Either way, these aren't even special unique loan programs or anything, you just need to find a REI-friendly local lender with an IQ greater than a cabbage. 

I've seen a few for sale and am wondering if that is the niche for the buy and hold person.

One is getting about $350 per month, the other projects at $1300 cash flow per month (after renos, very very unique circumstance).

It is a very unique strategy -I know!

For flip property, whatever you spend directly on the property is accrued and becomes part of the "Cost of Goods Sold" when you complete the flip.Whether a nail gun is part of the Cost of Goods Sold, a deductible business expense, or a capital expense depends upon the specific circumstances unique to your situation. 

Is there any unique way to find those kind of properties?

We are interested in a property with a unique situation....It is a 20 acre property with a main house and 7 rentals all on the same property.

I know this might be off topic but I was wondering if anybody has experience in this niche??

Marines are simply unique humans.  

We also have built an awesome team that makes self managing long distance manageable.Unfortunately, several others have recently discovered our niche - increasing competition, driving down prices, and shrinking cash flow (we're looking at $400-600 per house after expenses for Oct - our worst month ever).