It is possible there is more than one pack. I have sat on a road with my NV and suppressor and shot 3 pigs from 3 completely different packs. They came in about 30-45min apart.
That sounds like a good spot. With some scent like hog wild you can pull them to the trap.
There use to be several of my paint diagrams out on the web of traps. Here is the figure 6 one.
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I like to put a rope with a brass snap on each end to pull the door open. I'll start with it fairly wide then close it down slowly over time. Eventually I will and up with a double brass snap about the area of the blue line at the top to set it. I'll bend that bottom of the panel in to the trap a little to make a "hole" down close to the ground. That is usually enough for them to push through but not come back.
Get another snap for the bottom and have it clipped ready to go. When you approach that trap come from that gate side so hopefully they push to the opposite side. Get that bottom snapped immediately then I take the rope and sew it shut basically weaving through the pannels. It is a weak link if they hit directly.
Brass snaps on hog traps are your friend. It's the fastest way to secure things with all the panels.