Most of them are unreliable, not very skilled or just a pain in the butt to deal with. 

Units are basically plug and play. 

You have to know when to "pull the plug" on a tenant. 

(So this isn't a shameless plug) However, I can recommend a couple GCs that work only with investors. 

Due extensive research on rent rates and validate apples to apples comparison. plug these into a known calculator and if it meets my criteria for cashflow and cash on cash return.

@Andrew Cantu  low end duplex's in Indy tend to be in the WORSE neighborhoods.. they look best on paper but your experience is by no means unique I wont fund one.. and more than one of my clients has lost their butts on those.. your lucky you got out with your money back. 

well, here's a link that you might want to check out. plug in the city & state where you're interested in securing section 8 tenants in and it will display the budget for that area for 2018.   

There are many "wireless" cameras out there, but most need to be plugged into and outlet, so while there is no data connection wire, you will need a power wire. 

I may offer a 5% reduction in their next months rent at the very most.If you are paying for the hydro deduct the cost of heating with the oven from your discount and tell her to pull her head out of her butt.

Choose your investment based on cash-flow and don't bank on appreciation and just keep plugging away until you find something (or shift your focus to a different market if that's easier).