It turned out to be a very clean trench. I was pleased. The 1" PVC was trimmed to the right length and then shaped before I glued it into place. I thought it would be easier this way.
After the PVC was glued in, I applied 4 layers of fiberglass and then faired it. Some more sanding it needed for a smooth finish. My neighbor stopped by yesterday, and then a friend came over, so my sanding was cut short. I felt like I needed to post my progress this morning, so the finished product will be posted at a later date.