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I second Caissus' suggestion as an alternative for a few reasons:
1. It is more like real chess.
2. Taking more time over a particular move forces you to be quicker later in the game.
3. Less likely to time out accidentally.
4. Tournaments will have known time limits per round. A 40 moves/30 days + finish in 10 days, for instance, would be guaranteed to complete the round in 80 days.