Passagemaker Boat Cover Pattern?

I know CLC sells boat covers, but much like the tarps I've been using, I'd rather be disappointed by something I've made rather than something I've bought.  I would love to get my hands on a pattern to sew my own cinching boat cover, since I've sewn all of my Sailrite sail kits.  I'm okay with free or purchased pattern.  Thanks!

   I had to make 2 seams across, and I used 2 cross bows and a ridge pole to bow the cover up

Looks great. Where did you get the canvas?   I am thinking of a nice cover like this as well as nice bag to accomodate the boom, spar and sail.

   I order my sewing stuff from https://www.sailrite.com/