Water
Water
Rough water
Are you asking about the transducer lead falling out - just installed a new unit on the bow and found the transducer lead didnt have the screw thread thing attached - found it in a bag, in 2 pieces, with a gromet to stop water intrusion - you can screw that on reasonably tight, tight enough to stop it falling out.
No idea why Garmin didnt just put one on the lead in the first place.
Nitro Z6 Optimax115 Elite HDI5 Bow 5x Pro Console