It'd be like living in a shed.
After I posted that, I realised that it could be read differently - was just waiting to see if you read it that way too!!!!
Alison. The spacing of your post holes will be determined by the type of fencing you do.
For standard lap panels then it is 6 foot. If you are going the way of close boarding then the length of the rails will give you your distance. My close board fence had 3.6m rails, so one post at each end and one in the middle at 1.8m. That middle one is flexible as like you I hit tree roots and I moved mine a couple of feet either way.
I would definately stay away from met posts and concrete posts for that matter.
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