The fact that there's a hook and a day or more of slow movement complicates things. Some coastal, including some of our more notable storms (and tropical systems) we've gotten have been straight thumps that pas through quickly, where the main concern is shifts left and right.
But here, for this system, there's huge model variation (for being a couple of days away) in the time and location of when (or if) it will make landfall all based on potential loops, stalls, and intensity.