With another winter approaching I figured I'd comment on the Seal Skin cover. I'm just south of Boston. I've struggled with covers.
I saw the sale Seal Skin had and bought one. Looks nicely made. Fit well. First rain storm (not even a bad one) the car was wet underneath. Seems that seals are porous.
Now I have a tarp under the Seal Skin. Ridiculous. And, if you look out on YouTube the comments are turned off.
The search continues.