After the hull and deck are glassed together you are instructed to lay a filet of epoxy thickened with wood powder into the inside shear seam to seal and strengthen it. Because I would cut hatches into my boat, I could wait till after the hatches were cut out to do this step. The hatches would give me easier access to the seam along the length of the boat. I would proceed one side at a time, tipping the boat on its side so that I was applying the filet down into the seam.
The tools described for the process didn't work very well for me. So I improvised and used tongue depressors to do the job, taping one to a 30 inch stick to reach some parts of the boat. Work areas were sometimes very confined and difficult. For example, I had to remove my glasses to get my head and one arm into the forward hatch.