I can't see how that would be a good idea, when it is an easy task to cover the entire upper hull with 'glass cloth all in one go.
So that's what I did.
First the overlaps from the cabin roof and topside panels were sanded and feather edged to accept the additional topside panels.
Here is the starboard overlap onto the rear panel, nice and smooth.
Patterns for the topsides were made by laying paper along the panels and scribing in the curves and overlaps.
This is the rear topside pattern taped in place for a test fit on the port side.
Next the patterns were taken inside the house to cut the 'glass panels. There isn't any room in the workshop to do this.
Here the patterns are held firmly in place on the rolled out cloth by a couple of stuffed chicken door stops. They work well, and don't talk back.
While marking out the cloth for each rear topside panel I added an overlap of 15cm to the top edge, so that the same piece of cloth will cover the seatback top and overlap down the seatback into the cockpit.
Here I am marking in the overlap on the 'glass cloth.
Then as always the cloth is cut just inside the marks to get a correctly fitting 'glass panel.
Here is the rear topside 'glass panel fitted and held in place on the starboard side, ready for wetting out.
This is the forward panel on the port side.
In the following pic you can see where the topside 'glass panel extends across the seatback top and overlaps down onto the seatback itself, in one seamless layer.
And finally here are the the newly covered topsides, seen from port at the stern.