While you might find a lender offering low down payment options, you'll still need cash reserves for repairs, maintenance, emergency fund (ideally 3-6 months of expenses), etc.

Not sure how one would make money on this. they are following the buy high sell low concept of investing. !!

So I had a windfall and can sort of "semi retire" with a part time low stress job. 

That said, if you only have a few "residential" rental buildings, most direct carriers can get you pretty low deductibles on their stand-alone policies (State Farm, Allstate, Farmers, Nationwide, etc.). 

Are you looking for steady, low-risk passive income now, or are you comfortable taking on more leverage to scale faster?

Having trouble getting any quotes for a low value SFR (<100k), any leads appreciated

That protects you from having to sell to  low.

Looking to cash flow on low entry homes in some pretty nice neighborhoods close to where I grew up.

There are a million low cost or free options out there.

Tornado, wind, hail, flooding if in a low spot, general weather related.