so, what happens when you go to get a full a doc loan and have to provide tax returns?  

The price of the investment and the return on capital is AMAZING!!!

If they are professional, they can explain this quickly and easily.

You can replace toilet lid put caps on toilet hang toilet paper holder and recall in less than hour easily especially if caulk comes off good.

If experience is your concern, you can easily partner up with another experienced investor in your area to help balance the risk out. 

They can say you failed to make a repair and wish to withhold ent to get previous rent returned. . 

This is something we run into quite often and can easily navigate.

Purchase in an international market for potential high returns?

The difference between a 12% return and a 16% return compounded over 20 years will make you sick to your stomach. 

Are they going to be able to buy your proudly done flip.3) If you misjudge the market, do you know when to dump it.4) Can you put a spreadsheet together on your purchase costs, carrying costs, rehab costs, closing costs, selling costs, tax costs, contractors that don't show and delay your project etc. etc. etc.5) Is the return worth the risk.