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try this there's some very helpful stuff in there by G-Whiz 

http://www.norcalkayakanglers.com/index.php?topic=61428.0

+1!

I will add that the depths typical at Doran are so shallow that too much leaded line creates drag that cause my pots to be dragged around. I use 70 ft and it is too much. I would like to adjust to 45ft, with 10'15,and 25ft shots. My 2cents.

Thanks G!!!!!
I am a crabbing HACK!