Anyway take my opinion with a grain of salt cuz I have never done door knocking(but I have walked up to strangers seeing information about a neighborhood) so Im excited to see your responses and to see how close I am to being correct! 

How many letters you send out and the frequency depends on your budget AS WELL as the ability for you to actually answer the phone and respond to the calls, and your how your area and market responds to the direct mail.best advice. just do it. you won't find out if it works or if it doesn't work if you don't take action and just do it. you'll learn more from one campaign of letters than listening to strangers on the internet lol

Btw, you may want to say to try your experiment with friends, you tell a stranger he is wrong, you may end up with a black eye.

Some ideas for activities-Go meet and build rapport quickly with strangers Network without being spammySales skills-sell something people think is a total commodity they can get anywhere.

If you partner have a lawyer draw up a contract intailing all details as to purchase, expences, exit etc.Leave absolutely nothing to trust, go into the partnership as though all of you are total strangers.

Go into a contract assuming you are both strangers and do not trust each other at all.Do not worry to much yet about protecting your assets.

I grew up in a real estate investment household, and am no stranger to REI concepts.  

Look at how many people here freely share their information with strangers.

I figured they would treat it better than a complete stranger.

If I wanted to gather a bunch of like-minded investors and we pool our money to find investor properties, is there a site or service that will allow us to do that - taking care of all legal requirements for safeguarding and providing appropriate representation for every investor, and whatever else is legally required to operate this entity - buy, collect rent, pay taxes, manage expenses etc.I wanted to see how easy it is to work with strangers locally to invest in real estate.