So I finished the trailer today. My uncle did the final coat of varnish on Saturday while I was at work. Saturday I was unable to do any work on the trailer. I worked, helped another uncle to set up for a crawfish boil and then headed to dinner with a friend.
Today, I cut up some rubber to put between the decking and metal frame. Then I used carriage bolts to secure the decking to the trailer. I double nutted the carriage bolts to keep them from backing out. I checked the lights and everything works fine.