What I have noticed so far is that it is far riskier to try and do outbound to reach out to sellers via cold calling, direct mail, SMS, etc. vs. building up your SEO, and running ads while building up your brand.

Well Jerrylls website + SEO is always fine free, and other then picking the domain name to match a teriary market and paying for SEO its one idea. 

Inbound consist of SEO, joining Facebook where property owners are, newspaper ads from owners, Zillow FSBO etc...

Airbnb and VRBO have so much SEO going on you can't beat it.  

People have absolutely bid up these assets, its a hard business to run, staffing, employees, SEO, marketing, etc.

OKieDOkie thenThe one hour ago lead.. was looking for tickets to Thailand to take that super babe Dixie with me and make a bet to see which lady is a lady and which is a ladyboy.All free, effortless, great leads..Dude, get a website, and if you have one, SEO it to hell!

In fact I can’t think of any RI-specific sources that would only apply to RI and not other states.Classic strategies for finding motivated sellers include direct mail, SEO/web advertising, telephone pole (aka “bandit”) signs, door hangers, driving for dollars, etc.As far as getting lists to direct market to, buying them from list brokers is popular, as is driving around yourself, trawling public records sites (see ripropinfo.com) etc.

Use them for management software, online rentals, call center and SEO

Also, I plan to have a website that uses SEO and probably blog on it about all the activities available because we draw from a large area for vacationers.  

If you have more money: SEO and direct mail.