A: We only target properties with tile roofs and, if during due diligence significant roof issues are uncovered, we either have the seller repair or we walk away.

Over time, it became apparent to me that even that metric is somewhat flawed because it's so easy to jigger the numbers (ie the same property will have a different "cash on cash return" if you put down 10%, 20% or 30%).

I believe they will be a little higher priced and you will have to uncover hidden value such as companies that hold down move-outs and turnover costs allowing you to use lower calculations in your worksheets. 

Once the demo starts, all the fun stuff they don't discuss gets uncovered.

Every system you try will have flaws, or you may salivate over a feature that appears in other software.Some familiar names are mentioned frequently: Stessa, Apartments.com, RentRedi, TenantCloud, Innago, RentManager, Avail, Rentec Direct, Doorloop, etc.I recommend conducting thorough research on each app online to understand their offerings, pricing, etc.

My concerns are what do I do if an inspection uncovers structural issues that can make the investment unprofitable or what if title search reveals liens against the property or if other such issues come up.

Fatal flaw: regarding "Initially, he didn't even want to use attorneys, but we insisted."

I would also think that having an experienced Realtor on my side that can spot flaws in properties, just based on their experience.

They don't care.Btw for those of you trying to wholesale huds, get your title company (best to use a 3rd party) to do a title search BEFORE you start working hard on the property, half of the property i get from hud has some sort of title flaw that needs to be resolved, maybe 20% of them I can't fix.

Your strategy is flawed with respect to value creation.