Meeting buyers at open houses is usually the best.

I understand its crucial...but this firm would not allow me to work with sellers.....do open houses.....nor create listings..I just don't know if that is the norm.I understand the prospecting part and its importance.

YES, open an LLC as it can absolutely make is easier to obtain mortgage financing on Rental / Investment properties...in many situations.  

Open escrow, do inspections / title work, get fire insurance.Close on the property, typically paying the remaining funds with cash or a loan.If you're buying through a realtor they will have contracts to use. 

Being open for feedback is what helps investors (everyone really) learn and improve.

At least the way I have been thinking, but Im still open as to reason why another strategy may be better. 

On the RVs you’ll want to know how long those people have been there, do they pay annually or do they only stay for the 3-4mo “season”, if seasonal do they pay a premium versus the annual, are sites open for short term stays (daily/weekly), how are the surrounding RV parks occupancy...The longer the term the easier to manage, less of a business.

Otherwise I could envision a scenario where an "investor" is traveling all around the US/world, booking open house appointments with no actual intent to invest and just using it as an excuse to travel. 

I'm not completely solid on what balance I will find between commissions from investors, commissions from more traditional home sales, and cashflow from rentals, however I'm diving into it with an open mind to see where I find opportunities. 

After recently refinancing a duplex, the remaining equity will allow me to open an interest-only HELOC with a maximum withdrawal amount of $21,300.