Dylan Barnfield (Ohope) placed second in the final after earlier beating Kibblewhite in the semifinals. McColl surfed in the same semifinal but was off the pace, finishing last.
Kibblewhite now takes the lead on the tour heading into the national championships where he is the defending champion.
Mischa Davis (Piha), fresh back from a year studying in Europe, won the women's longboard final.
Nic Jones led the under-18 boys' final from the outset after posting a 9.0 point ride on his first wave, with Mt Maunganui's Josh Taylor fourth.
Mount's Mal Brady was second in the over-40 final.
Mt Maunganui will host the fourth round of the longboarding tour on February 18-19.
Men's Longboard results
Final: Thomas Kibblewhite (Auck), 16.07, 1, Dylan Barnfield (Ohope), 12.87, 2, Sam Johnson (Gis), 11.07, 3, Phil Morris (Auck), 9.83, 4.
Under-18 final: Nic Jones (Aust), 17.67, 1, Ben Poulter (Rag), 14.77, 2, Sam Poulter (Rag), 12.23, 3, Josh Taylor (Tau), 10.13, 4.
Women: Mischa Davis (Oratia)14.73, 1, Alexis Poulter (Rag), 10.90, 2, Shelly Jones (Auck), 8.0, 3, Anna Jolly (Piha), 6.77, 4.
Over-40 men: Brian Young (Orewa) 14.83, 1, Mal Brady (Mnt) , 9.57, 2, Steve Tyro (Rag) , 8.97, 3, Guy Rencher (Waihi Bch), 8.63, 4.
Over-50: Mike Thomson (Rag), 13.5, 1, Mark Hoyle (Orewa), 11.60, 2, Grant Cochrane (ChCh), 10.47, 3.