The people who make that trap are based out of Forestburg. They had the video sometime back about "Hogdini, the Jumping Hog" that would climb out of traps. Those top edge panels were developed specifically for that purpose, to stop Hogdini who escaped from them 3 times.
44 hogs in the trap at once is impressive. I supposed you have to have 44 hogs coming to your place to catch 44 hogs in your trap, however. We don't usually get that many, LOL.