generally smaller baits do to bait fish quality. I personally thrown up to 6-9inch baits . progresses as time goes on about the size. but 4 to 51/2 inch baits work good even smaller at times its a question of tackle then down sizing to adjust to the baits throwing .alot of guys will only throw what is comfortable to there equipment. example Rattle traps work good there only 4 inch max alot are 3 like from bucher tackle.Alot of guys will not throw them because it feel wierd the action and vibe the size mimmics fine or tight action.spinner baits used often in spring for the same factors just often to mimmic a small schools of bait fish.I do not gerally go over 9 inch baits, great fourum!