I certainly wouldn't use a 2 or 3 round ball for a serious game. Some of my harder balls have played 50 - 100 holes of golf, but as I said, they're not great....I pull them out as a second ball or trying to get over a massive carry.
-------------------- Dave
Returned from 5 years of not playing - played off 8-11, now 12 .
Member of the Tommy Armour 845 appreciation society (current membership 2!)