If you don't mind loosing too many fish and flies you can ignore this advice and put your hopes in 3x long hook shanks. However, it is just as often the second fish trying to steal the bait from the mouth of the first that cuts you off. Long hooks are no proof against this. Six inches of light steel, heavy mono or the heavy fused braids do the trick. They may interfere with presentation but presentation counts for nought with blues.
Speed is everything and color just a bit more.
Be prepared to do a lot of two handed retrieving. If the truth be known, a lot of flyrod blues are first hooked while trolling since this allows for more presentation time and even more distance to the fish. Blues can be caught when there is no feeding frenzy to cast to or rips to troll. Simply find concentrations of forage and cast to high probability water hwere fish have been seen before. Sometimes just fishing for stripers will lead you to the blues.