In the mid 50s a buddy and I used to go to the Redondo Harbor to catch bonito. I started with 6 lb line then 4 lb. I could land most of them on the 4 lb then tried 2 lb, all the line was Stren and the reels were Mitchell 300s. The 2 always broke. I have no problem with 4 for bass if it's in clear, no obstructions, water.