WINDSURFnSNOW said..
Try smaller. Much easier to maintain speed and accelerate if you ask me.
I see where you are coming from. That was my first thought too. But he's already at 88 sq inches (and a fairly soft shaft). If he goes much smaller he'll be paddling a postage stamp.
The Naish 17 used to be Dave Kalama's board of choice. And when he paddled it he used to use a 120 sq inch paddle!
How heavy are you, GusD?
By the way, you don't pull the paddle through the water, you pull yourself to the paddle. The blade hardly moves in the water. What you might be experiencing is the board not moving rather than the paddle blade not moving through the water. Big boards take a bit more grunt to get them going. Try Connor Baxtering the shaft and taking much shorter faster strokes to get yourself initially up and running, then transfer to a more conventional stroke once you are up to speed.