Covers

Nicely done!  If you want to save that space where you have it staked out, you can use the lower keder rail on the driver's side.  (It looks like you have one).  Search the web for "tarp trackers".  Gently widen a spot on the keder rail for the tracker to slide into the rail, and attach the guy lines directly to the trailer.

Reading your signature, you probably have plenty of experience with flyaway sails.........