i've thought the same thing. actually with the groundhogs, you can just wrap the line around the head of the stake 1.5 times and force the tensioned wrap over the slack wrap, then the line will advance in only one direction. works pretty great, the stake has to be positioned a certain way, but it really does work well. i wonder if they designed it like that or if it was by accident, should would work with the v stakes too.
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