WGTpizza- Solo practice round that does not count for average. Player hits an errant shot and wants to try it again. Or player wants to try different shots from the same situation (for example, flop, chip, punch, pitch from the same spot in a bunker). Program a Mulligan button so the player can hit the same shot again. Every shot still counts against the ball life so you'll be selling a ton of golf balls to willing customers who use the feature to learn and improve.
In real life that is what the pros do during practice rounds before tournaments so putting such a feature in the game adds realism while increasing revenue for the company.