In my case I would however venture to guess that the ROI on doing at least enough work to get the view (no fancy add ons), that $15,000 spent would result in at least $25,000+ value added.   

Biggest blunder - not starting in real estate in my 20s.I spent decades in the medical field, moving from Biomed Engineering to sales and then working my way up the corporate ladder. 

I'm very new to real estate investing, and have just spent the past 2 weeks exploring Charlotte and Gastonia for deals.

I would say to avoid them at all costs. 13k spent and one loan closed!!

I spent 6 months trying to get a offer accepted when I started.

Bought a house with 25 k cash and spent 35k to renovate.  

@Manuel Hi and welcome to BP.  

However if your time is spent making mail pieces, you're taking time away from buying houses which is extremely costly.Postage is also much more expensive unless you have a bulk mailing permit.

I spent the next year just educating myself and meeting and talking with as many people as I could to understand why some people are successful and some fail miserably.

Hi Kenny:I myself am relatively new to Mobile Home Park investing, but I have spent the last 8+ months in a deep dive educating myself, from the Mobile Home University boot camp, to listening to every podcast under the sun on this niche, to reading books, blogs, etc.