Hansen won a playoff to wrestle the fourth flight title from Don Lien.
Lien carded an 84 Saturday to open a two-stroke lead over Scott Spronk (86) and a six-stroke lead over Hansen (90).
Spronk fell out of title contention with a 50 during Sunday's opening round, while Lien outscored Hansen 43-45 to increase his lead over the eventual flight champion by eight strokes.
Mark Lais, who shot a 95 Saturday, toured the course with a 39 during Sunday's opening round and moved into second place behind Lien (seven strokes off the pace) heading into the final nine holes of play.
Lais cooled down with a 44 during Sunday's second round, which gave him a 178 two-day total and third place in the flight.
Hansen, however, outscored Lien 40-48 during the second round, which left the players with 175 totals for the tournament.
When Hansen birdied the first playoff against Lien, he was awarded the flight title.
Cashin turned a pair of consistent days on the course into a three-stroke victory in the fifth flight.
In what was a tight battle Saturday, Cashin, Cory Bloemendaal and Merlin Cleveringa shot 90s to share a one-stroke lead over John Oksness and Geff Fitzer, who carded 91s, and a three-shot advantage over Jarnet Johansen (93).
Cashin and Bloemendaal both shot 42s during Sunday's first round to remain tied for first place, while Cleveringa slipped one shot back with a 43. Oksness and Johansen shot 43- and 44-stroke rounds to fall two and three strokes off the pace set by the leaders, while Fitzer slipped out of contention with a 49.
Cashin's second 41 on Sunday gave him a two-day total of 174 strokes and a three-shot win over Bloemendaal, who finished with a 45 and placed second with 177 strokes.
While Johansen shot a 51, Oksness shot a 48 during Sunday's second round to place third in the flight with his 182-stroke total.
Gary Luft rallied from a four-stroke deficit on Sunday to take top honors in the sixth flight.
Evan Verbrugge shot an 88 Saturday to take a four-stroke advantage over Luft (92) and a five-shot lead over Keith Van Hulzen (93).
With Verbrugge shooting a 48 while keeping the lead during Sunday's first round, Van Hulzen turned in a 45 to take over second place (two strokes behind). Luft shot a 47 to fall into third place in the flight, three strokes behind Verbrugge.
Luft saved his best round for Sunday's final nine holes of play, outscoring Verbrugge 45-50. The effort gave Luft a 184-186 win over Verbrugge at tournament's end. Van Hulzen struggled by shooting a 54 during the final round, but he still placed third in the flight with a 192.
Kaczrowski notched a five-stroke win over the field in the seventh flight.
Kaczrowski and Paul Mehlhaff both shot 90s Saturday to share the flight lead over Gaylord Keck, who carded a 94.
While Keck slipped out of contention during Sunday's first round, Kaczrowski outshot Mehlhaff 46-50 to take a four-shot advantage into the final round. Steve Top, who scored a 97 Saturday, turned in a 44 during Sunday's first round and moved into third place, five strokes off the pace set by Kaczrowski.
Kaczrowski's score inflated to 50 during the final round, but neither Mehlhaff (51) nor Top (50) was able to close the gap.
Kaczrowski's winning total was 186 strokes. Mehlhaff and Top shared second place with 191s.
Bosshart had to battle back during Sunday's second round to win the eighth flight.
Bosshart and Jeff Ahrendt shared the lead after 18 holes of play Saturday with 95s. Bryce Oldre and Nate Skattum were five strokes back with 100s.
Ahrendt outscored Bosshart 45-48 during Sunday's opening round, but Bosshart returned the favor by outscoring Ahrendt 45-50 during the final round to win the flight with a total of 188 strokes.
Ahrendt placed second with a 190. Skattum outscored Oldre 48-52 during Sunday's first round, but Oldre used a 49-55 scoring advantage over Skattum in the final round to place third in the flight with a 201.
Boom won the ninth flight title by a four-stroke margin.
Boom and Chris Meyer shared the flight lead with 101s on Saturday. Del Spronk was three shots off the pace with a 104.
Boom then shot a 46 to start play Sunday to gain a four-shot cushion over Meyer, who turned in a 50. Spronk, who shot a 52, and Tom Sterrett, who carded a 47 during Sunday's first round after shooting a 109 Saturday, were nine strokes off the pace with nine holes left to play.
Both Boom and Meyer shot 49s during the final round, giving them the first- and second-place tallies of 196 and 200 strokes. Sterrett nipped Spronk 55-56 during the final round to place third with a 211.