Do's and dont's of building a bay pen

My pen is a 48x64. The actual pen is 48x56 with a 8x48 holding area in the back. On one side of the holding area is a chute to turn the hogs to the pen and the other side has a return door. All of the corners are forty fived so there in no real corner for a hog to back into. I done with cattle panel which i believe is 48" then i have to two 2x6's spaced 4 inches apart on top of that. So it is roughly about five and falf foot tall. It has tin covering the hog panel. All post are 3" wood post spaced every eight foot. Good and sturdy and never had one escape. A few close calls but none to date. I built this more less just as a project for something to do. It has kind of turned out to be a wasted space because i do not go to bay competitons, the only use is to get young dogs barking at a pig. So if you are not going to go to bay competitions and you are already limited on space i would keep it simple. JMO