any information is appreciated about single pole crappie fishing

I see guys on TV going to it a lot know and seek help with the following questions

1. is it essentially spider rigging but with 1 pole?
2. do you have to have live scope to do it?
3. are you moving? (sometimes I can't tell if the guys on tv are moving or not)
4. are you constantly moving or is it a stop and go thing?

thanks for any info or advice on this newly popular technique