I've been hesitating from submitting photos that require a property release because of the hazzle involved.
However, I have half a "deal" with the owner, but I was wondering if he needs to sign every single agency's own property release form. Showing up with 10-12 forms might scare him off. 

How do you handle this?
Is there one generic form that all agencies accept?
Will Fotolia accept an istockphoto form and vice versa?
What experiences do you have?

I found I stock very picky but for others mostly will accept each others provided you edit out the name of the agency.