One of any drop target bank, HUN or THE that lines up a vertical row, is worth 25k (or maybe 50K) in bonus.
THE & HUN advance bonus x, but only two places each.
The 2 drop target banks, HUN and THE add bonus to one horizontal row. A completed row is worth 25k bonus.
Hitting THE captive ball is the most important shot to find—completes vertical rows (for additional bonus) and advances bonus x.