It won't hurt at all.. It will only help with any parasite or fungus.
Anytime you handle fish in number, this is good practice.
FYI, although a different species we do this to EVERY Walleye we strip or milk in mid 40's because we purposely remove (Dry) the slime/water from each fish which exposes areas extremely prone to infection/fungus, which is what happens every time you handle a fish.
Careful handling is always good practice, this is more insurance and addresses other issues such as we've mentioned above that are already present.
