Usually you have a higher frequency of lates and no pays and life issues they are going through from stress and bad financial choices.With these types of properties you are buying at a much higher cap to deal with all of that and price it in to your purchase price.

I feel the biggest factor in determining frequency of tenant turnover is location, location, location.

The problem is it takes a while, and if you need to feed your family, "Wholesaling only" is not the best plan, because even if you have money for marketing, it takes seven times frequency on a mail piece to be effective for a whole saling deal, more than seven times if you have a lot of competition where you liveMy advice to you is not to do "Wholesaling only"Dev [email protected] has awesome videos about marketing directly to sellers, Google search "rule of seven we buy houses"To do low equity dealsLook at expired listings and go after sellers who can't so because they have no equity but there's no work to be done in the houseDo a lease option assignment and make 3% in 10 hours, just working with the seller and the tenant buyer

Attacking a smaller list with more frequency is the way to go.

I’m targeting negative equity properties but am not sure as far as white letters or yellow letters, handwritten or typed, mailing frequency, etc.

I think it depends on the frequency of your area.  

If you ask them for something every time they attempt to change the terms of your written or verbal agreements you will notice a big change in the demands (and frequency of demands) they approach you with.

Increased frequency of walk throughs?

Seems like folks from SS are joining us with frequency! 

What is customary on frequency of visits in situations like this?