The YakGadget FishFinder Mount is a super solid solution using 2 T-nuts and knobs to double mount to your kayak's gear track. 

• Designed to fit 5", 7", 9" and 12" fishfinders.
  
  
• Features a 35mm multi-positional ball system.
  
  
• Mounting shaft is 3.75" long.
  
  
• Double T-nut locking system.