Comment Re:spiral? (Score 1) 514
spiral doesn't work. i tried it. imagine a square lawn, which most are, or at least rectangular. a spiral starts out great. you carve a big circle out of the square quickly. now you have 4 corners to mow and the remaining shape is such that you have some really difficult turns to make as you try to clear them. you end up having to go backward and forward in your tractor and it just sucks.
i found a modified zamboni approach to work very well.