I want to create an LLC/Trust structure to protect the property.

You should be able to confirm when you do his background check.His fiance trusts him to be around her kids.

Trust me on this!

Wondering how to build trust in him to do seller financing with us after this.For reference we have 100% close rate, my thoughts approaching this is to counter back and say the risk of default is very rare, if he's worried about the park defaulting he just needs to save up $20k in reserves and he'll get paid $70k in income for the park for the next 5 years while he waits for balloon.

You will trust too quickly (hire a fake guru) or never trust at all (analysis paralysis) and find yourself stagnating.If you aren't working on yourself as a person, you aren't working on your business.

Anyhow...sounds like you're on the same page with @Shawn Parsh about picking the worst property in the best neighborhoods  >>> I get it, and trust me I'm always looking for those gems (if/when you find them, they get snatched up fast!!).

What I would emphasize is that you want to have 100% trust in whoever you partner with.

I think knowing what I know now is helpful for the future for all of us.If you have a company you trust let me know.

None of the sites, including AirDNA which I like and use, are to be trusted at face value.

Go with someone trusted that you also research for their reputation.