I can’t imagine the dual controls would be installed for operations of this nature. The tail rotor pedals might remain in the aircraft but with the links secured to non-moving pins so they just become footrests for a front seat passenger. The collective is still between the front seats but likely guarded closely by the PIC.
Would companies that do this kind of work have cameras installed (Appereo Vision 1000 etc) like we do in our USFS contract aircraft?