I like to bid high a few hours before the deadline.
That keeps away daytraders and makes a bidding war much easier to overview.
When you are bidding against 2,3 others it is doable, but when 10,15 are in the mix, it is almost impossible.
I also found out lot of times that when more than 3 players are bidding on a player, the player is mostly sold for too high.
Only in the dark, we succeed!