Show a mod for using bench in band hammer curls

[FourAM]

I was wondering if you could show the correct position I should use when doing the incline hammer band curls on an incline bench? I have an incline bench that I use for this particular exercise and never feel like I am in the correct position.
Rachel

 

[Stacy]

I use my stability ball with my legs outstretched, seems to work great.