I actually have this same issue. Weird.
I actually had a skateboard laying around and since we’ve figured out that she reacts to them, it’s been in the middle of the living room for her to sniff and check out. My brother and I are always standing on it (I don’t really know why.. it’s fun).
She’s good with people walking by on skateboards now, but the noise still makes her react. So we’ve been putting her in a sit/stay every time one goes by. If she stays, even if she reacts vocally, she gets praise. Once she has that down, we’ll be moving onto getting her attention on us and then work on keeping her quiet.
The problem here is that we don’t see them often, so it’s really slow going.