The Pilothouse presents a challenge when removing or putting on the sail cover, especially when the cabin roof is wet.
Going to my local hardware store, I purchased some non-skid used on porch steps.
I added 3 strips to each hatch on the cabin roof as well as the forward hatch over the v-berth.
(http://i357.photobucket.com/albums/oo18/jmbjr2/IMG_3480_zpsuajojrwu.jpg)
(http://i357.photobucket.com/albums/oo18/jmbjr2/IMG_3481_zpsymcsn7mt.jpg)
It looks like you refinished your hatch frames too. I try to avoid stepping on the hatches. In rough conditions I will kneel to furl the sail and always make sure the boom is cleated tight.