I don’t fill entire spool with braid using mono as a filler. And I used to use 20lb braid, but past number of years backed down to 10 pound braid with even a couple of my spinning outfits with 4 and 6lb. Trolling cranks I have landed stripers, hybrids, bass, walleye and cats (flatheads) with a couple going 20lbs or more, as long as you retie your bait when needed, braid is pretty hard to break. Even with long lining jigs I never use over 10lb on spinning reels. If the lighter weights make you feel uncomfortable, 20lb power pro is super hard to break.