Coach Dave Heisey is entering his 9th season as Head Coach, the only head coach in Shamrock Lacrosse history. Coach Heisey is one of the original "Central PA lacrosse guys" having played on Coach George Gonzales' first team at Harrisburg Academy in the 70's. He returned to Harrisburg after college and a club career in Washington, DC and Maryland to serve as assistant coach to Coach Gonzales for 13 seasons.
He began his head coaching career at Central Dauphin East where he led the Panthers to a program best 23-9 record in 2 seasons. He was also the head coach of the CD Middle School program for 2 seasons, was a founding coach of the Keystone State Games lacrosse tournament, winning 2 bronze medals and a silver leading the Capital Region team and also coached the Central PA Dawgs club team.
Coach Heisey also served as Vice President of Marketing and Business Partnerships for the Mens Collegiate Lacrosse Association (MCLA) from 2009 to 2015, overseeing branding and partnerships with lacrosse related businesses nationally for the largest collegiate lacrosse body in the US.
He and defensive assistant, DJ Healey, returned to their alma mater in 2009 and turned around the previously 1-14 Spartans and moved the program to Trinity in 2011. Since starting the program, Coach "Heiso" has led the Rocks to a108-45 record, 7 straight District 3 playoff appearances, the Mid Penn Commonwealth Division title in 2016,PIAA District 3 AA Championship in 2018 and PIAA State Playoff appearances in 2017 & 2018 He was selected 2017 & 2018 Sentinel Coach of the Year.
Coach Heisey is a member of the Harrisburg Academy Athletics Hall of Fame and in 2017 was inducted into the USLacrosse Central PA Hall of Fame.
Career Head Coaching Record
2003 Central Dauphin East High School 11-4 MPLL Semi Finals
2004 Central Dauphin East High School 12-5 MPLL Semi Finals
2009 Harrisburg Academy 6-9
2010 Harrisburg Academy 10-6
2011 Trinity High School 9-6
2012 Trinity High School 11-8 District 3 Playoffs
2013 Trinity High School 12-6 District 3 Playoffs
2014 Trinity High School 14-4 District 3 Playoffs
2015 Trinity High School 14-4 District 3 Playoffs
2016 Trinity High School 14-7 Mid Penn Commonwealth Division
Champions/Dist 3 Quarterfinal
2017 Trinity High School 15-7 District 3 Quarterfinals/PIAA State
Playoffs
2018 Trinity High School 19-3 District 3 Champions/PIAA State Playoffs

Total..147-69 .684%