Of the PNP operations I've seen, ear protection is the very least of the worries of the animals involved.
My 6am wake up call, a big juicy lick on the head, proves it. Forgeddaboudit and do good stuff.
by Card Machine Works
RV-9A N4822C flying 2200+hrs. / Cedar Park, TX
RV8 Building - fuselage / showplanes canopy (Done!)