On long straps like that I would put a twist in them, just my preference. Besides the straps on the outside looks like you did a nice job on the tarp.
I was trained to throw straps over tarps. We haul mostly coils and after some 1000 or so loads its clear why we do it that way. For one when winter hits and the straps get full of road salt and grime it seems a bad idea to throw them onto bare neked steel.
Didn’t put a single hole in the tarp on the plywood load... And I tightened those straps as if my life depended on it, too... Not saying it can’t or won’t happen but that was my brief experience so far. I will say... I had to pull the straps, pull n roll the tarps, and then resecure it at the customers because I wasn’t allowed to move the trailer without securement. I understood the policy. And they understood why I strapped over the tarps at the shipper.. so all went well. Still, that’s an extra five to ten minutes...
The problem I see with tarp and strap job like that, is that wind will get under the bottom of the tarp and flap. If you tarp over your straps then the tarp will flow to the outside edge of the trailer and you can pinch the tarp against the edge with bungee/rope. What keeps the tarp tight the way you did it? Zooming in on picture I’m not sure how you secured the bottom of the tarp where it meets the deck. I’m actually curious here and this is no way saying I know what’s best. I’ve only done this 6 months and like to learn new ways.
My opinion is if the shipper is worried about my straps being wet or having grime/salt on them, that they would have the coil wrapped up in plastic or something similar to protect it, prior to me picking it up. My straps go under my tarps on my trailer.
