i would buy peg to peg from martin king, all the relivent info in there to get you started and you can go back to it time and time again for referance.
top and bottom line are all the same line in one big loop running off the top, through the end pin then through the bottom. then it needs splicing were the two ends meet. i try peg every 5 yds. you will find what suits you in time but i think 7 is too far apart for myself
good luck