Backing or no backing

[planter]

Hi guys and gals. New to this forum but active on others. I hope you guys can answer a couple of quick questions from a guy that likes and uses old fashioned mono.

But.. I now have a Saros4000 that I am going to put 8/20 fireline on it. My questions are.

Do I need a backing to prevent slippage or can I just use a bulk spool and go straight on with an arbor knot??

Whats the best way to trim a tag end with braided cause its sure not the nail clipper I used when I get out of the shower..

I hope I have not slipped to the dark side with the braided line. I have always been pretty happy with a good mono changed monthly or as needed.

Thanks folks from a fellow water beater. John