I've checked some out that have about 200-500 lbs of pull. They are a bit bigger than hockey pucks but smaller than curling rocks, something you Canadians can relate to. Can't remember where I saw them, I'd have to search the 'Net.

BTW, I love both the sports alluded to above.


Edited by MoBOB (07/10/08 10:09 PM)
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"Its not a matter of being ready as it is being prepared" -- B. E. J. Taylor