Plunge top lanes to light associated drop bank for 5,000 per drop. Dropping all drops resets the banks.
The game may not credit multiple drop target hits when hit at the same time. Sloppy shots can cost you the opportunity to collect 5000 pts.
Concentrate on the top lanes before hitting targets. Every target you hit is a missed opportunity to score 5000 (instead of 1000 if not lit)