The ladder can stand directly on the floor and only sit in a track at the top. The downside is that you have to lift the ladder a little when moving it, but on the other hand, it becomes a bit more stable. But if it's not a ladder you need to pull back and forth all day, then that's sufficient.
The ladder can stand directly on the floor and only be attached in a track at the top. The downside is that you have to lift the ladder a bit when moving it, but on the other hand, it becomes a bit more stable. But if it's not a ladder you need to pull back and forth all day, that should be enough.
I was thinking about having wheels at the bottom, without any track at the top.
What you say is probably better, but it might still be unstable when coming down from the loft. Especially the first few steps down.