As you can see from the pictures of the sidewalls, the floor and roof side joints didn't come out smooth nor flat/flush. And no time was spent to do so when I glued the fabric overlap at the joints.
It would have taken me a couple days to do so which I didn't have. At this point, I was 4 weeks past the time that I had asked permission for and overstaying my welcome.
Figured that I could always smooth it out later and could cover it up anyway with trim.
I wanted to add protective rub strips anyway at the high potential impact areas. Like the ones added on cars, trucks, cargo boxes from rubs and impacts. As I would be exploring and from day to day travel, the box width could see some impacts.
I had accidentally impacted and penetrated my PMF skin when a board fell against it, creating a 2*3" L shaped gash. Damn. Easy to repair, just caulked and painted but not impressive in the least. My guess is that my initial TB3 dilution, quantity applied, plus the fact that it was more dilute to begin with, gave me a softer more flexible skin. It wasn't hard and crusty like most others are with the TB2. Pure speculation as I've only seen two other PMF trailers that were PMF over plywood.
So I contemplated what could I use for rub strips that would be strong, durable and cheap to protect my sidewalls. Think Rubber strips would be great but where to find some? Thought about cutting up old tires but that would be a bear of a job and that I would need about 75 feet.
What could I find at HD to do the job? Could use wood and paint it but wouldn't be a durable finish.
So I think I came across a good solution, composite plastic wood boards. Tough, strong, resistant and cheap enough. And it came in two colors, Rusty red and cape cod grey. The red was out of the question but the grey was neutral and would work. At $5 for a 6' board, wouldn't bust the budget and so I glued them on. Looked decent and hide my lumpy seams and give rub protection.
The top side corner edge and front nose cone were especially important from tree branches going down forest roads staking out camping spots. With my roof almost 10' high, was going to meet some branches and this would deflect then off of the PMF.
Ideally, hopefully, maybe.
And so I bought a bunch and glued them on the corners.
Note in the picture, the circular dent which was made when the wall was blown down by the wind onto a 5 gallon bucket of paint. Would smooth that out with caulk and paint.