The team was owned by George Hetherington and played home games at the Neal S. Blaisdell Center in Honolulu, Hawaii.
[1] Majority owner/president: George Heatherington Minority owner: Robert Wu Director of communications: Chris Hart Director of sales and marketing: Kalei Kamakahi Director of promotions: Tamme Strickland Head coach: Guy Benjamin Saturday, April 17 - Hawaii Hammerheads 27, Mississippi Fire Dogs 24 Saturday, April 24 - Texas Terminators 36, Hawaii Hammerheads 21 Thursday, April 29 - Texas Terminators 49, Hawaii Hammerheads 34 Sunday, May 9 - Hawaii Hammerheads 53, Idaho Stallions 37 Saturday, May 15 - Idaho Stallions 27, Hawaii Hammerheads 26 (OT) Sunday, May 23 - Hawaii Hammerheads 57, Rocky Mountain Thunder 40 Friday, May 28 -Hawaii Hammerheads 37, Rocky Mountain Thunder 18 Saturday, June 5 - Hawaii Hammerheads 38, Idaho Stallions 34 Saturday, June 12 - Idaho Stallions 63, Hawaii Hammerheads 51 Saturday, June 19 - Hawaii Hammerheads 48, Rocky Mountain Thunder 44 Saturday, June 26 - Hawaii Hammerheads 28, Rocky Mountain Thunder 17 Saturday, July 3 - Hawaii Hammerheads 55, Texas Terminators 44 Saturday, July 10 - Hawaii Hammerheads 36, Louisiana Bayou Beast 13 Saturday, July 17 - Mississippi Fire Dogs 35, Hawaii Hammerheads 20 Sunday, August 1 - Hawaii Hammerheads 24, Louisiana Bayou Beast 20 Wednesday, August 4 - Louisiana Bayou Beast 32, Hawaii Hammerheads 30 IPFL Playoff game Saturday, August 14 - # 2 Hawaii Hammerheads 36, at # 3 Mississippi Fire Dogs 16 On August 20, 1999, the # 2 Hawaii Hammerheads (10-6) defeated the # 1 ranked Texas Terminators 28–13 at the Travis County Expo Center in front of 4,527 fans.
Behind an opportunistic defensive effort, the Hammerheads held the Texas offense, the league's highest-scoring unit, well below its regular-season average of 40.8 points per game.
Aside from recording four turnovers (two fumble recoveries and two interceptions), Hawaii also held the regular-season champion Terminators scoreless for two quarters.
Former Los Alamitos HS and University of Hawaii QB, Tim Carey, who later played in the Arena Football League, lead the team to its championship while earning the game's MVP honors.