I bought my home last year and the previuos owner started putting up a wooden privacy fence well lets say he did a very bad job. Nothing was in a straight line, so now I want to do it right. What I have a question on is the putting in the posts, the ground is uneven and slopes in one corner. I didnt really notice this untill i ran a line from one end to the other. So my main question is should the amount of post sticking out of the ground be even all the way across, lets say 6' from the ground to the top of the post or should I make the post touch the top of the string? Sorry for the long rant but I every thing I read is for a nice level lot.

Thank you