What do you mean by privacy fence...what exactly are you looking for. There are several types of security fencing that attaches to your uprights via screws and brackets. But they are not privacy fences...they are meant to keep people out of your pool.
Nosey neighbors??? My wife and I have thought about something similar. We were thinking about getting some light cloth or canvas in a blue or something like that and weaving it through the uprights of our security fencing. I have noisy neighbors to the west and a two story house to the south...We have thought about doing this several times. I hate having to be in the pool when the mean old lady next door stands at the fence and shakes her head as my kids are having fun in the pool. You might want to try something like that...Some type of outdoor material that is light weight but is strong enough. I think would make a nice privacy type fence.