hey, welcome to the site.
For the fence around the track, that is actually a part of the auto-support feature.
Youll see what i mean, if you go to the supports drop-down menu in the nolimits editor. Then go to the bottom of that menu to suto-supports.
Then select a build mode (normally i select final build, the other modes will not show up in the sim, they just let you preview.) Next, your going to select the build style. Then, go ahead and press ok. This will make supports for you woodie, and also the handrails along the side of the track.
Normally, you want to do this at the end of the coaster, its completely normal for the handrail not to be there. [peakhill]
Hope this helps.