Joe that was my deal, I caught several last winter that went over 70 lbs one went 81 lbs.
I kept all my tails and froze them. They ain't bad to flesh and dry like some guys like to use them but I like them like the ones posted here. Soft and supple. I have yet to figure it out. I do know you have to soak them in a lime solution to get the scales to slip. I tried three different tanning formulas and they still came out hard and stiff as a board.