I faked a fence with just uprights - using the S&D type that appear in many photos with substantial posts (?concrete) with two thin metal uprights in each gap. I then just attached the hedges (horsehair with scatter) by eye and use da bit of PVA. This photo - stolen from a Facebook page posted by Stephen Brooks shows the type with one upright in each gap but it shows what I'm on about - even if this is GWR with S&D above!