Referrals from friends and neighbors are probably the best, albeit non-foolproof, method.  

So yes anybody can and should use a website and learn SEO and Carrot makes it fool proof.

I'm not saying its foolproof, but it will go a loooong way in reducing the stress, time and effort you are going to put into starting a home. 

Now of course it's not 100% fool proof but hey nothing is, but this is a good hedge.

I’m a numbers person and it’s math that interests me in a deal, does the numbers look right - have you stress tested your system , is it foolproof ?

House hacking is fool proof way to get into REI.

Not foolproof but what is.

Not 100% foolproof, but nice to catch it before the house gets built and before the slab gets poured.   

I don't think a credit score of 650 is asking too much - while it may take longer to fill the vacancy, the theory behind a higher score is a more responsible tenant *though this is far from fool proof*. 

This might not be foolproof in certain states but in mine (TN) that's going to get you kicked to the curb in a domestic situation, leaving the rightful tenant in place.