Back when I was seious about it, (Spelled not married with children) I'd fly 5-6 days a week and 4 flights per day. Do the entire pattern just like a contest round.

Now it's whenever I can get to the field.

Now when I get to the field I make the first flight count as if it were the last round and I needed it to win the contest. In the bigger contests you might get two rounds in a day but they're so far apart time wise it's really one flight per day. Someone has to win the first round, might as well be me. On a new pattern or class I'll fly each maneuover untill comfortable with it then put the whole thing together. This is also when I tend to trim the airplane to fit my needs.

Also you need a coach to help you see the mistakes you make rather than ingrain them into your flying. I never practice alone.