How do I imitate a scaffholding block?

I'd like to make something that works like a scaffolding block, but has no L/Rclick collision.
I already know how to make clickable blocks without bounding boxes so i'm guessing this could just as well be applied to player collisions.
How easy or hard would it be to find the scaffolding block's code and modify it like this?
And if it's not feasible, are there any alternatives?