Thanks kiswa and tuwood.
Kostas1 - you can see how this helps with gluing the sheeting in place on the turtle deck. The sheet held this shape after being removed from the plane after drying overnight.
Got the stringers and spine touched up with some final sanding for the sheeting.
Sheeting in place and trimmed up. Pretty happy with the results.
Next I got the hatch piece glued in place on the turtle deck.