In the Junior D play downs, the Hawks found their niche and made it all the way to the OHA Cup final against a representative from Madoc, Ontario.
The Hawks again made it to the final and defeated a representative from Bobcaygeon, Ontario, 4-games-to-none with one tie to win their first provincial championship in only their second season.
After the playoffs concluded, the Hawks dropped down to the Western Ontario Junior D Hockey League.
The Hawks defeated the Lakers 4-games-to-none to win their third OHA Cup and second straight OHAJDL championship.
The Mitchell Hawks finished the 2005–06 season first in their conference and fourth overall in the OHAJDL with 23 wins and 9 losses.
The upset helped clear the way for the seventh seeded Lucan Irish to eventually win the title.
The Hawks ended up defeating the Travellers 4-games-to-2 to win their fourth ever OHA Cup and the first ever SOJHL championship.