Private lender relationships

[Account Closed]

Hello, 

I have a question about fix and flipping houses. 

I know that out of the many relationships you can achieve with a lender, two are: equity partner and taking a loan from them. 

Assuming that your lender isn't institutional:

1) what contracts do you use for a lender that gives you a loan? How do you get his name on the mortgage? Also, in your personal experiences, what rates have you been able to receive from them?

2) On the other hand, when you have a equity partner, where you use all his money and you do all the work, and you split profits, what contracts do you use to secure your/their position? Do you put the house under both your names? How does the partner know you won't just screw him over? Also, what contracts say that you will split the profit, when he can technically screw you over. Do you have different contracts for the house itself and the repair expense?

Thank you in advance.