Which method is going to give you the best Future Value of Money, and get you to your goal faster?  

Am I going about evaluating this the right way or should I be using other methods? 

they have been there 5 years without a septic cleaning.

We've used Trulia, Zillow, Hotpads, Postlets, and Craigslist to post the ad, and we follow up with My Smart Move .com for the screening process.Is there a better site/method to your success?

Bandit signs are still an effective way to generate leads but it is important to be in it for the long haul and not rely 100% on that method alone. 

well it depends. if you want to use the brrrr method then the first option may be best for the refinance bit. however with a single family home you will take a bigger hit if they move out where as with the duplex if one moves out you still have half your income. theres pros and cons of both.

The best method I know is to post a 'real' ad on CL to explain what is going on (someone is posting your property for rent without your conscent) along with a link to the fake post and a request for the CL community to 'flag' the fake post.

I have an option to do a cash-out refi for a penfed 10 year balloon (3.875% interest, 30 year amortization) or a 30 yr fixed with a mortgage broker(4.75% interest) for my BRRR method strategy for a SFR rental.

Any suggestions on other methods, please let me know!

I've heard this can be great as you don't have to deal with as much paperwork when closing on a home that is being bought outright with a HELOC (This is my understanding, I have not used this method).