Use helicopter, roadblocks, and backup more than three times

Here's what you do.
1) Goto your Need for Speed Hot Pursuit 2 directory
2) Goto the AI directory
3) Double click on the file AIChaseDefs.ini
4) Go down to where it says SingleRaceSupportMax
5) Change the number after the equal sign to 100
6) Go down to where it says #startPursuitLevel
7) Change the number after the equal sign to 100
8) Go down to where it says #startPursuitStrategy
9) Change the number after the equal sign to 100
10) Go down to where it says #freezeCops
11) Change the number after the equal sign to 100