I am running 3 grapner 700s with 12.5 max eff. each. Total 37.5 at max eff. Of coursc it goes above that a little. The $40 pro boat (rated at 40 or 45 amps continous) ran 2, 700s on 12 volts and I had no problem and I ran it hard. It hardley got hot. Or the motors.
Would programming it make a difference.
It has a program enable switch.
a reverse switch
a slow priority switch
a high and low switch for the whine problem
Other than that I think it all works ok except the relitive numbers that proboat gives of 40amp continus and the 80 amp continous that sc-480 gives are not correct unless the water cooling makes the difference, I am weird about putting holes in my hull, so I am putting a fan in it, wal-mart $2.49 runs for about one hour on two aa. At the lake today someone took a video and will try to put it on the web, will keep you posted, did not cut of today on the no whine mode but the motors might have been hotter. Will look at the instructions and keep you posted.