Once I have this list of addresses, how do I find the owners, when most of their addresses won't match the property I'm searching for? 

You have to trust the contractor will have your best interests in mind and not gouge you on the pricing  or respond to tenant related or nonsensical issues (ie, I have a broken slat on my miniblind and need it to be replaced). 

Find the area you want to target and have the addresses skipped traced. 

Look at partnerships / see if you have a good buddy or two who you can trust at who are into the real estate.

If you have taken those plan documents to Solera and opened a trust account for your Solo 401(k), then you have a functional plan.Of course, the key to operation and usage of a Solo 401(k) is having access to appropriate guidance, so that you understand what you have, how to administer the plan, and what you can and cannot do as far as executing plan investments so as to remain within the IRS rules. 

I was thinking about giving each tenant 12 self addressed stamped envelopes to me so they can put the rent check in and send to me.  

If you can find ways to streamline your processes, offload some tasks onto trusted team members, and work smarter, you will free up more time for rest and for some occasional fun.

It’s a win win if they’re willing to cover the expenses and you have someone you trust installing it.

I know a lot of cities are trying to get rid of trailer parks, but if they know like and trust someone who owns one it makes it more personal to vote for getting rid of it.   

Feel free to message me the addresses and I can help you make that determination.