Hint pieces

Im just wondering how many hint pieces are you guys using?
All 5 or only the one, or something between them?

I did run the program first only with 1 hint piece and later i did add 2 hints more,
the score is little better when only 1 hint is used, but the
chance to find solution is better with using all hint pieces.

Now im thinking witch is the goal, trying to get the high score
using only 1 hint or going for the solution and use all hints...

I think it is more likely to win the 10 000 then 2 000 000 dollars.