Instead of everyone "sitting around" for 30 to 90 seconds waiting for someone to putt, why don't you allow the people waiting to read their line? That way, all they have to do when its their turn is move their marker to their "pre-read" spot. Even better than that (but will take more coding/memory) would be remembering what was read so that the player doesn't have do anything when its their turn, but putt.
Benefits:
You will save from 30 seconds to 4.5 minutes per hole depending on how many players and how fast the players play. This in turn means faster games, which makes WGT more money since balls will be used faster.
Win/Win for everyone. seems like a no brainer