The most common unusual changes in my dreams are day/night. Non-lucid dreams tend to flow quite consistantly aside from that.

My LDs are different, but I recognize the rapid changes as lack of experience. They tend to fade quickly and react to my attention and thoughts in very pronounced ways... but not all of them.

In order to stay lucid, I spin. I always end up where I wanted to be if it is determined in advance. When I just spin without thinking, it is random.

I've never thought about spinning with the intention of returning to the same place. That goes on my personal goal list!