adywan said:

I see no problem with the stardestroyer at the beginning. It is, after all, deploying several probe droids. I think that the Empire would scatter the Stardestroyers throughout the galaxy to give the widest search range for the probes, so it would be on its own.It also wouldn't make sense having the stardestroyer jump out of hyperspace above Hoth at the beginning because the rebels would have been alerted immediately to the imperials presence which would contradict most of the first part of the movie

Agreed.