The YakAttack Universal Mounting Plate featuring the LockNLoad Mounting System was designed for attaching just about anything to YakAttack GearTrac, MightyMount, or other factory installed kayak track systems. This mount features a flat top plate with no holes perfect for attaching miscellaneous fish finders, trolling motor throttles, gun mounts, etc. With every product being a bit different, hardware to attach your miscellaneous product to the Universal Mounting Plate isn't included. The mount is perfect for the Humminbird PiranhaMAX 4.