The problem with putting in N Scale fences is that we're dealing with tiny strips of plastic that, given my past efforts, don't really want to stand up straight. I think I found a solution, which I expect was probably a solution that others have discovered well before me (and is very similar to the prototype) and that is to use pins glued to the fence so that they can be easily inserted along the railway right of way.
I am also trying to come up with more cost efficient fencing than many of the commercially available products. The below attempt is a strip of styrene, painted a grey/concrete color, with homemade 'graffiti' decals applied.
BLMA Models, which was also a bit of a question on how to apply. I decided to try my luck with pins again, this time using cyanoacrylate (aka "super glue" or "CA glue") which I find is sometimes not very reliable if there is any pressure on the item.