He also owns propwire.com which I currently have a free account that shows the history of the property and allows Skip trace for a fee. 

As far as your wholesaling journey, I would probably advise you to start off by buying a list of potential motivated sellers, skip tracing them and then cold calling them.  

Does Deal Machine skip trace and offer phone numbers?

I try to avoid this neighbor due to lots of activity of cars coming and going all weekends and week evenings.After much effort and skip tracing I was recently able to locate the out of state owner of the property on the side and promptly sent another certified letter as earlier mentioned.The big problem I may face soon is if I sell this property I may face issues from the buyer or buyers insurance company regarding these trees overgrowth,Short of me digging in my pocket and paying for tree service there is also the issue of contacting the owners requesting permission to access the trees for trimming.

If the tenant does not have the opportunity to defend themselves because you did not provide notification, the case will be thrown out.Check with a Skip Tracing service to see if you can locate them.

People often skip this and get denied by the bank.

But if you have a little money to invest, then skip-tracing and contacting property owners is another method. 

I use LandVision, but you can also use Propstream, etc and build lists of parcels in the markets you are looking, and then you skip trace the owners, call them/mail them, etc.

The only part that is “difficult” is cutting in, but also you cannot skip steps.

If the bank stopped paying property taxes, how likely are they to skip the foreclosure auction?