Yes they can!
Usually the hole you use in the headboard is dictated by how the halyard drops out of the exit sheave. On a previous boat the sheave was quite proud of the mast track and using the forward hole pulled the slugs out of the track.
It's all in the details......
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)
1984 Fast/Nicholson 345 "FastForward"