and now the array the row on the left uses the low end mounting method more photos later
the row on the right uses a corkscrew method thus round poles

this cement base method below is the most costly

here are shots of us installing the low cost posts there are reasons of all types of install maybe buysolar will chime in as to the why.
Note I am taking the photos

a paving tamper a ladder and buysolar in a hard hat using a level we knocked off this work in 1 hour -2 hours

panels waiting install

a few rows are done

we hope to use
one 2880 finksy j4bbrwock psu --------------- 2880 watts ------- gold/silver
three 2980 finksy j4bbrwock psu's -------------- 8940 watts --------plat
one dual 2000/4000 finksy j4bbrwock psu ---------------- 4000 watts --------gold/silver just under 16kwatts
2 x 30 amp pdu's
1 x 20 amp pdu
5 avalon 6's
1 s-7
the gear above is all in hand .
this should use 6kwatts
leaves us 10 kwatts for a sidehack and team bitfury miner farm to be added see this link
https://bitcointalk.org/index.php?topic=1368507.010 kwatts at .1 watts is 100th would be an impressive farm.