I have a senior 8 foot and iit calls for a .60 but me being a power nut i put a .91 4 stroke on it and it has almost unlimited power so i know the 12 footer would fly with a .91 or 1.00 We flew my 8 footer with a .40 so they fly real easy and float like a feather. My club claimes my telemaster does not want to land. You have to cut the throttel completly to land. I love flying mine off the lake with floats on it. Even with .60 size floats it barely slowes it down....
Good luck Jim S