I had a thought that I haven't tried yet. I wanted all your input to see if it would make a good drill or not.
With only the cue ball, on a open table with no balls on it.
Pick a starting point to make a letter. The cue ball's path (with an overhead view) makes the letter.
Each letter can have a different start point on the table.
Go through the alphabet.
Use rails for your long lines of a letter(s) like; R, L, Z.
The link to the Wei table is in my sig.
With only the cue ball, on a open table with no balls on it.
Pick a starting point to make a letter. The cue ball's path (with an overhead view) makes the letter.
Each letter can have a different start point on the table.
Go through the alphabet.
Use rails for your long lines of a letter(s) like; R, L, Z.
The link to the Wei table is in my sig.