I have a couple of rattler skins that have been in the freezer for a while and have a couple of spots that look like freezer burn. Will there be a problem backing a bow with them?

I'd tack them out and let them dry and see how the burned area reacts.

Ok  I got them tacked down. We will see how they turn out.

I would soak them in water then tack them up, freezer burn is a dehydrated place.

If they don't look right when they dry I will soak them and try again