2D Pixel Line Renderer

I'm currently creating a grapple hook in my 2D game, but I'm having trouble with keeping the pixel art style. I can't use a normal LineRenderer because the pixel ratio is different, and I can't just rotate another sprite because then the pixels are rotated and it'll look strange.
I'm using a Pixel Rotation asset at the moment but it doesn't support scaling objects well, so I was wondering if anyone knows of a way to draw a pixelated line from one point to another? Or if there's an asset which would do something similar. It's just to keep the pixel art aesthetic.

Thanks, Anthony.

 

This may be overkill but something like this would do it:
https://www.assetstore.unity3d.com/en/#!/content/88118
https://www.assetstore.unity3d.com/en/#!/content/33829

As far as I can tell it's a shader that will snap vertices or UV's to the pixel grid