I'm going to stick with it and continue mailing every month for 6 months. 

Take the NOI (Net Operating Income) and divide it by the asking price.

Jeff W. is correct.... that's what I was speaking about in my last comment, but I will continue to work at wholesaling.

Even though I have a good amount of equity I am running into issue getting more mortgages to continue purchasing property.

@Ryan Andersen the most comprehensive guide to understanding, purchasing, and operating mobile home parks is from the Mobile Home University website (coincidentally authored by Frank and his business partner who responded to you earlier - he's not a self-promoter on BP so I will happily do it).  

You'll either want to create a partnership agreement or form an LLC and create an operating agreement, which will incapsulate both of your rules, responsibilities, rights and terms of the agreement.

However, I'd continue renting and getting no tax write offs against my high W-2 salary.

Good luck if you decide to continue!  

My background is residential HVAC tech/installer for 4 years (continue to do HVAC as well)  I quite doing HVAC full time to follow my passion.

So I guess my main motivation for joining this site is to find ways to continue investing in property, despite having put most of my free cash on hand into these 3 investment properties.