The chart below shows the key economic and demographic factors for some of the most popular markets.

@John Morgan Your great attitude through this tenant nightmare ordeal you've had to endure is inspiring!

Those 700 sq ft 1/1's and 2/2's right on the beach can  be popular, but as you mention, I'd need to be really educated on the rules they may come with.

Jeff, As a popular author here on Bigger Pockets recently wrote, management companies will typically never view your property as important as you do.

"Cash is king" is a popular saying for a reason.

Last five years,  neighborhoods like Hampden, Remington became popular neighborhoods, there are tons of areas where people can invest safely and still get good returns which I very much do. 

I have an unsecured Personal line of credit with TD bank I believe its interest range right now is in 10% range which is better than what most CC offer unless you're getting one of those special 6 month to a year special Promotions..Yes a lot of BP members do talk about getting line of credits the most popular would probably be a HELOC which is a secure line of credit would give you the best rates..

We're finding this especially popular among those investors who you mention use that short term, 6 month hard money. 

I wouldn't buy rentals FAR out at all, but depending on area, many of our local rural areas are very popular and rent up quickly.  

Seems like 10x20 is the most popular.