Drilling a hole for the anti-rotation bolt

Question

​Can I drill the hole for the anti-rotation bolt when I drill the transducer hole?

Solution

​It is easier to precisely locate the anti-rotation bolt and drill perpendicular to the waterline after the transducer hole has been cut.  Dry fit the transducer in the fairing,  then using the fairing as a guide, drill the hole for the anti-rotation bolt.