When I was at school we were taught to write so that the final letter on each line were in line vertically. I have been trying to remember how this was done, I think it was by drawing a feint pencil line, one inch from the right hand edge and then adjusting your spacing between each word on the line and therefore avoiding (as opposed to eliminating) the need to break a word with a hyphen on to the following line. I think we used an eraser to remove the pencilled line.

Whatever skill I amassed at this writing finesse at age 7 has long since departed.

If you are successful at justifying the right hand margin, please share.