I use 1, 3, 5, 7, 9, and 15. Rewarding a little bit for those whoe pick the most correct to create separation. You can also do an additon or multiplier for the seed, makes it fun to try and predict upsets, but can make it comfusing somewhat too. Good luck.
The object is to pick teams that advance. If your teams advance in:
1) Round 1 = 1 point for each winner;
2) Round 2 = 2 points for each winner;
3) Round 3 = 3 points for each winner (Sweet Sixteen);
4) Round 4 = 4 points for each winner (Great Eight);
5) Round 5 = 5 points for both winners (Final Four);
6) National Championship = 6 points for picking the champion.