What about rocks..... ? seriously, I don't like digging 3' and 4' holes every other job because of a few rocks the size of yer head. Thats right, that bit starts off in a hole 2' deep by 18" 4' long. and then it bounces off of a few rocks and it's DEEP. (been there done that) MY FREIND THATS ALOT OF DIGGING! This sounds like it wont be accurate after 20'. and also in the hot hot summer sun I could see it humping a few black top drives when the clay dirt is harder than Chinese arithmetic.
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