Any ideas on investor/lending contracts?

[John Geldert]

I'm going to approach a friend to see if he is interested in lending/ investing monies into my real estate flipping venture. Not exactly sure what options to offer him or how to write up a possible contract.  I know it really depends If he decides to lend or invest, but would like to have few fair/creative ideas to make this deal work. Any suggestions would be much appreciated!