Renee, I saw your post in the download page, I have a amd 64x2 4200+ 2.5 Go ram and a nvidia 7800GT 256ram, quite huge config, and the lot slow it down !
I uploaded a lot with this fence here : http://www.modthesims2.com/showthread.php?t=184013
I have them since .... sims2, I think i downloaded them in the laurana old site... but they have a shadow.
The pfish one have'nt shadow but they dont match, the post remain ! and they are unselectables.
I am not a mesh specialist just a user !
Hope I help you

In my fool-around with fences, a conclusion I've drawn so far is that it appears a fence with higher post(s) is likely to graphically silence the lower post(s) when these fences cross each other.

So, to make an invisible clone-recolour, using a fence with higher post can help increase the usability of such invisible clone-recolour fence for graphical post-silencing.

Yet, walls are can graphically silence the post effortlessly.

I've made my own invisible meshless fence for terrain-paint-based swimming regions... it won't have any shadowing including the one by the shadow shader.

We have found the solution, just delete the fence posts that you don't want:

http://www.modthesims2.com/showpost...6&postcount=513