Whats a tip up?

[lonehunter]

that makes good sence to me , i keep my tip up within the distance that the d.n.r. says for your regular rods . i fish about half way out on the bottoms shelf for the gills , and on the drop off with the tip up for pike .
i'll brave the cold in my wind break , too clostriphobic for me when i hear that ice cracking , must be from the last time i took a swim in febuary , lol !
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