Hi Chris,
I put the bulkheads in at that stage as it was easy to do it and didn't take any windlass to fit them, as I put the two panels in after that it was easy to tie them in first at the bulkheads as i had no helper to hold the other ends-the panels rested on the aft edge of the bottem panels at one end while I tied them to to the forward bulkhead, then went back and tied them to the aft bulkhead, then from the ends inward.The stain on the panels at the max radii looked very high so nas nsoon as I did it I poured boiling water over these points after fitting the midships spreader (holding the sides out rather than compressing them in) I also put in struts as you can see at bow and stern. This reduced the strain and enabled the bulkheads to be pulled down with spanish windlesses and stitching on the bulkheads without much force. Incidently the bulkheads did not fit all the alignment points exactly there were small gaps at some places but they were less than a few millimetres in size. To allign the edges of the panels I did not find driving a pan head screw in very successful but used small tabs of plywood screwed across the joins to be better. I have just finished taping one seam, a job I was not looking forward to as I was worried about using unthickened resin in a fairly large quantity on a nearly vertical surface, but it went ok!
Phil