But it would still take me twenty or thirty hours. The game is difficult. But the initial learning was actually the easy part. I have reviewed this game over and over and over through the years. The only way to remain sharp is to continue to practice or to have a much better memory than I have.
Some people continue to practice on their computer after they reached their desired level.
But most don't. And their skills depreciate over time. Also, there are relatively few games that can be played advantageously. Playing the same games over and over again can get boring. Every time you bet at a house-advantage game, you are losing money.