This guy has been well praised in the Samus video thread, and for good reason.
https://www.youtube.com/watch?v=fC-NAuwq_4I
One important thing to note is that he is mainly dropping the bombs from a short hop FORWARD, then vectoring backwards JUST enough to not get punished, but still in range to frame trap with a multitude of attacks. This means that the bomb is dropping in front of him downward with enough time for the active hitbox frames to start up by the time the opponent would have a chance to rush through it. You still want to stick close to the bomb in case they hit or grab you. Simply dropping the bomb on the ground isn't nearly as effective since they can just run through it and capitalize on your temporary vulnerability. Short hopping forward, downb, vector backwards also allow you time to regain the ability to act right in time for bomb to explode and doubles as a viable position to be in in case you want to zair, nair or even dair punish a dash attack, so you have options in case you see the bomb as not the best option at the moment. You want to move far enough away to not get punished when you move backwards, but not so far that you lose the advantage of being near the bomb. You will also notice that this player stand over the bomb in cases when the opponent heeds it and doesnt approach, then throws out a jab to keep himself from going into morph ball. This technique is really invaluable when dealing with rushers and aggressive speedy dudes, and generally just creating and maintaining space. All of this requires a good sense of spacing, but general you want to mix this in with missiles, zair and charge shot to remain unpredictable, but also have something always covering you. You are essentially attacking and defending at the same time, which is pretty cool. If your opponent doesn't respect the bomb, its because you aren't trapping them with it correctly. Practice makes perfect!