its part of the game bud. the number of larger fish you'll land with the minute difference in line size is astornomical. switching from 4 to 6 is like switching from dental floss to rope. casting, fall rate, line drag. everything as a whole is affected. strength of line really doesnt mean much to me. if it were 20 pound and it fell the same as the 4 pound, id fish it. if you're gonna bust off on 4 you'll 100% bust off on 6.