T&T: Paravane Rigging

[John & Liz]

Hello All,
   
  I have finally started rigging my paravanes and am having trouble deciding on what breaking strength to use for the line to the fish. In the event that I snag a fish on a large object, I want it to break away before damage occurs to the paravane boom, superstructure, etc. My problem is that I have been unable to find information as too much force is generated by the fish. Does anyone know of a strain gauge that I could insert in line with the fish to measure the force being generated?
   
  Thanks,
   
  John

       
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