What is the best way to do a co-wholesale?

[Rafael Cortez]

I've been investing on my personal portfolio and doing wholesale deals for a while, but I've always sourced my properties so I do not work much on the co-wholesale side. What is the best way to go about co-wholesaling? normally verbal agreements are common but trying to move a property when there is no real vested interest and pinky promises are not exactly part of my professional protocol .. any enlightenment would be appreciated.

Thanks

Rafael Cortez