I was wondering if the PiranhaMAX 170 would accept the quadra-beam transducer??

I see the PiranhaMAX 180 has 3 cones, the 20 @ 200kHz and 2 35 @ 455kHz

Fishing application:

lake crappie fishing with water depths primarily less than 20' and mostly less than 15'

river fishing with depths less than 15' and often less than 10'