The split rail fence goes straight into the background, where other elements are about 3/4 size. So, to bring the two together, the fence diminishes in size as it recedes into the distance.
To accomplish this forced perspective, I went through all the rails yet again and sorted them into three piles by size. The largest ones went into the nearest two or three panels, and the smallest ones were furthest. This helped to reduce the size of the fence with distance, while keeping the same number of rails over the length of the fence.
The panels get shorter with distance also. So I then cut the rails to the right length for each panel and made little piles of six rails for each panel. Being careful not to sneeze, or drag an errant cuff around, I then worked from end to end and glued all 55 rails in place.
There is an interesting view along the fence on the far side, which I think will be visible from behind the roundhouse. This is meant to be the route along which cattle would be brought to the stock pen for shipping, and I’m not sure what that should look like. Unfortunately, I didn’t anticipate that the path would have to integrate with the background. So, I’ve set myself a little puzzle there.
I still have a big pile of fence rails left over. Some of the big and medium-sized ones made the pile of rails visible in photos in the corner of the pasture. However, with the investment in creating these rails, I’m inclined to make more piles around the layout – just in case I need another fence one day!
Pembroke:87 
Rene – You are a masochist! Your fence looks fantastic and I love the forced perspective. Not many people think of it when modelling.
It was actually a nice way to spend an evening, Jim. These days so much of my modelling is at the computer, it was fun to sit down with a knife, some glue and a pile of wood.