Should I go through a bank or are there better alternatives?

Property prices are a bit elevated considering the low average income, so we're having to be picky and patient, and the banks aren't as willing to budge on the bank owned ones.  

Do we need to market more for more properties, more investors, more bank conversation for refis?

I would like to flip my next few properties to get some cash in my bank account.

Many vacant homes are bank owned. 

Looking for a rec for a local bank to do a HELOC.  

We are financing the purchase through a local bank.

It failed several times.

The bank has agreed to do a short sale of 189k.

My primary thought for involvement with the LLC was to get access to sellers who would not qualify for investor deal, but may be interested in short sale listing (which must be done with the agent for bank to consider it), or some other solution.