Especially in lower leagues there are players who do not bid in another round when they already have the leading bid... So you can take him out with bidding for example in round 4 as the first, he may think you're frustrated, bidding your last token, then you counter with a last second bid in the next round, and I really mean a last second bid, not when 2 or 3 seconds are left. I've won many players by using this strategy.