I laid it out, and Jane sewed it (we work as a team). It was made out of some Sunbrella scraps we had, so there were some unusual effects - like the nicely-made seam at the bottom, and the odd placement of some Common Sense fasteners. The only tricky part was the tapered top. I laid this out as if it were a mast boot, cut in half, with a straight section inserted between the halves. There is a drawstring in the bottom to keep it in place in a blow, and it is slit up the back to accommodate the propane hose.
And now there is no untoward nakedness. You can stop averting your eyes.