Never ever cut a transducer cable. You ruin it if you do. 1) the signal voltage is only a tiny tiny fraction of a volt that will be wrecked by a splice. 2) A splice causes an impedance discontinuity, resulting in signal reflection that becomes "noise" to the system.
When you bundle the cable, try to do it in fewer long loops instead of a lot of short ones. The cable is shielded but it is still better to not push the limit by creating a high signal noise environment from wadding a lot of cable up in a tight bundle.
I have fished a long slender cable bundle into a section of inexpensive flex bilge hose ( 1 1/8 or 1 1/4 inch, looks similar to vacuum cleaner hose).