Brad what height is your wall, is it single or double skin, what condition is it in and how high do you want your fence to be.
Have you thought about using a hedge such as laurel or leylandii, there are also smaller growing hedges, some with thorns, so depending on your situation there are a few options.
The only person who got all his work done by Friday was Robinson Crusoe.
Anything i post over three lines long please assume it is an article lol.