Free Shipping Radio Button, Toggle, or Check Box

What is it you can't do? Describe the problem!

Without promo codes, I can't offer free shipping on bundles.

How are you doing it today? Is there a workaround for the missing functionality?

The workaround is a promo code which some users forget to put into the system.

What impact would it make? How often/when would you use the functionality?

It would allow free shipping on higher margin products or bundles of higher margin products. We would use it regularly.

How do you think it should work?

On the Catalog>Advance page, adding a check box would exempt at the product lever paying shipping fees.