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There's science in shotting also. One giant shot is not the same as an equal weight of smaller shot spread apart on your line. One acts as a literal anchor the other allows limited swimming within a restricted radius without it being too active. There's a time for each.
bobber dogging
Now this is something I hadn't thought of before- I do this with my river drifting rigs (steelhead bobber rigs), but hadn't thought about doing it with my tip-ups. Care to elaborate?