Bigger Pockets has a variety of calculators to help do this.

@Nikki ClosserI’ve bought several deals over the years from investors that did fine when they were local but saw their properties go down hill fast for a variety of reasons (bad managers, lost touch with local market, etc.) after they moved out of state.

There are a wide variety of different types of investors at this meeting and the networking is great. 

I offer my experience based on MY 1031 exchanges for discussion and thought provoking only.Most people do not use a 1031 exchange for many of their transactions for a variety of reasons. 1) There is a cost of doing a 1031 xchng that you do not have with other transactions.

Employers already offer to perform deductions for their employees' paychecks for a variety of reasons: debts, taxes, child support, medical etc.

Then you can find receipts and look up totals from a variety of different perspectives, e.g. how much did you pay vendor X in 2018, or per month, or by unit, etc.

Exact ROI can be tricky to calculate I believe because RE ROI incorporates a variety of factors such as purchase price, rehab, loan pay down, appreciation, cash flow, exit strategy etc.  

My stepdad owned a few rental properties when he and my mother first met, so I was exposed to some variety.

Section 8 covers a wide variety of people.

Most NJ wholesalers aren't very good because NJ like NY is EXTREMELY hard to wholesale in for a variety of reasons(especially northern NJ).