Board Thread:Questions and Answers/@comment-4775209-20131123170010

Does anyone know any trick to popping enough bloons to open the present quickly? My current strategy is beating MOAB Madness with 2 Ground Zeros, but it seems to slow for me. Please help me! I'm currently Rank 35 and I really want the Monkey Sub!

EDIT: On December 17, 2013, I have unlocked all towers and upgrades (the Ice Tower was the last normal tower I maxed out, then I upgraded the Monkey Sub all the way) 