And get the weight forward until she's up on the plane !
I did a PB2 course in a 4m SR4 with a 25 mariner fourstroke on it once with two seriously obese people , I'm driving and they are sitting one either side on the tubes, the throttle was wide open and the engine was bogging away and the bow is in the sky, trimmed in all the way 12'' pitch prop.
Me '' err can you both move forward a bit, err a bit further, mmm, further,''
And when they were both ,practically sitting on the bow she popped up on to the plane, at which point they had to move back before the prop came out of the water !!