I put a 700bb motor with 12cells surface drive rc-hydros esc the works, the thing is the boat is too slim for 12 cell, dont get me wrong it flew

http://www.rcuniverse.com/forum/m_22...tm.htm#2263193

http://www.rcuniverse.com/forum/m_22...tm.htm#2228426

Put a 15 turn motor with 8 cell the right prop with a surface drive and it should fly, you cAN see all the mods i did to mine at those links posted here have fun, one word of advise the y532 burnt the motor i recomend a 30mm from www.offshoreelectrics.com