They identify markets that are growing and get in the way of appreciation. 

.* Identifying motivated sellers and honing my outreach.* Learning the ins and outs of structuring win-win deals.I’m open to partnering, collaborating, or just grabbing coffee to exchange ideas.

But the answer for everyone may differ.Here are the personal attributes I see in those able to achieve a higher than market ROI, enough higher to be able to “scale”.1- Knowledge of real estate principles, real estate law and real estate finance2- Minimum 3 -5 years full time, or near full time experience directly related to real estate investing3- Ability to utilize technology for increased efficiency, capacity, and accuracy4- Excellent hired legal counsel and excellent hired marketing help5- Established method(s) of obtaining consistently high QUALITY deal flow6- Ability to manage and choose people who are NOT employees: Attorneys, Appraisers, Mortgage Brokers, Real Estate Brokers, Title Companies, Surveyors, Marketing Specialists, Accountants, Contractors, Consultants, Property Managers7- A VERIFIABLE track record of success8- Ability to identify, analyze, and negotiate a deal that can be “worked” for “enhanced” ROI9- Some type of competitive advantage; for example for me it’s my ability to analyze and identify mortgage loans that are actually less risky than all other lenders believe (on the investing in debt side), and on the real property side it’s my ability to analyze”pull the trigger” with LESS information than other investors need,  combined with the ability to pay cash, or raise significant capital almost instantly as well as being able to obtain loans at the lowest prime customer bank rate with no recourse or personal liability.  

That being said, you could be the individual who helps identify this respective vendor.

It Could help your offer though if the seller thinks he might have difficulty in identifying his replacement property within 45 days (he has 180 days to actually close on it) And it’s okay with you....you could offer to delay your closing for up to 30 days or so, to help him have more time in identifying his replacement property.  

Start with Reonomy or Costar to identify all the 100+ units in your target market (on and off market) and then see if you can get into direct contact with some owners.

I currently own a successful short-term rental in Fort Lauderdale and have identified a new property nearby that I’m confident will perform well.

In fact, New Jersey law prohibits you from listing personal identifiers on the form. 

If you don't/won't have WiFi then you should either consider a SimpliSafe system that you can move around from house to house, or some type of Trail cameras like hunters use for identifying game areas.

@Nick D.I'd start with identifying what your buy box is for your next property and what you are going to need for a purchase.