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| This is how it all starts. |  |
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Here's a pic of the spikes in the ground. I lay the ridgepole over and put the spikes down in the holes. For each pair you need only every other one filled. Four spikes in place, done. |
| Now to get the distance across you pick up the ridgepole and swing it out ninety degrees on the front pin. Place a spike at the far end. Then repeat for the rear spike. |  |