I thought the season 5 premiere was much better than season 6. Where was Carl at? I didn't see him the entire episode.
If it was real life (which it isn't), wouldn't it be a better idea to deal with the pit by killing the walkers? It looked like there was just a couple of walkers escaping at a time. That's something you could task a crew with killing via swords, arrows, pikes, spears, etc. Maybe guns just in case things got out of control?
Leading the walkers away doesn't sound like much of a solution, because eventually they're just going to.... Walk right back.