Our CellBlok system is the simplest solution on the market for attaching a fish finder to a kayak, and to make it even easier we now offer the CellBlok paired with our SwitchBlade Transducer Arm. To complete the install all you need is a YakAttack fish finder mount compatible with your make and model of fish finder and a battery. CellBlok Info:Depthfinder installation on kayaks just got smarter. The YakAttack CellBlok is a track mounted battery box and its top surface serves as a mounting platform for the YakAttack SwitchBlade Transducer Arm and YakAttack fish finder mount. No more drilling holes in your kayak or routing wires! Simply loosen the two track mount knobs and the CellBlok allows you to quickly and easily attach or remove your depthfinder. A minimum of 10.5\