Yeah, they basically just go ZOOM in one direction while watching their watches, then they deactivate the zoom. FTL technology at its finest!
@Sep1) Most likely those scenarios are found in the middle of combat, and like I said, sensors jamming. An example of superluminal sensors is the scene in which the Executor and her fleet arrive at Hoth. Vader is notified by the admiral that they've jumped in too close to the planet, giving the Rebels the opportunity to erect a powerful planetary shield, forcing the Imperials to land troops. To me, it would make sense if they were detected
before they entered Hoth's sphere of influence. Consider that the purpose of their invasion was to destroy the Rebel Alliance with one decisive strike.
These ships and their crews know what they're going to do, and so they're prepared to begin operations immediately after jumping in. The Rebels on the other hand
do not know that they're about to be attacked until the fleet is spotted on sensors first. If they weren't, they wouldn't have had time to activate the shield that would've saved them from a would-be surprise orbital bombardment. You just can't relay the orders fast enough to react to the sudden appearance of an entire fleet already showering green bolts of death upon your entrenched yet all-too-vulnerable base.
2) I'm not saying that Hyperspace isn't dangerous, I'm saying that navigation computers would have the capability to take said gravity fields into consideration when plotting routes, and to see them before it's too late for an emergency stop [so your ship doesn't go crashing into a star]. Sure, one can say that the hyperspace lanes have already been established, and so the galactic community relies on them for travel, but if they didn't have superluminal sensors, how could they tell if something got in the way of what would've been a safe route? It would be reckless to just blindly jump into space even if they
say "This way is clear and safe", because you're still shooting forwards at FTL speeds with no eyes on the road, and yet millions of ships do it every day in the galaxy.
3) Seeing them run away is one thing, knowing where they're going is another. There are many possibilities if they're going FTL, they would at least know they went a certain direction, but what about once they're out of range? That's where you put their possible paths of travel into consideration.
4) Yeah, alright. My main point with that was to say these ships weren't used in situations where they'd be useless from you just going around them.