Fitted a new carpet myself this year. Ripped up the old carpet tiles, numbering them as I went. Took em home bought a nice deep pile beigey carpet from Allied, laid the numbered tiles on top of the carpet and cut around. Saved alot of arsing around and only had small amounts of trimming to do. Perfect Fit!!

Need a cap for the roof too. Only thing with mine is my mast with flags and light are on the cockpit roof. Will need a hole to go over it.
Other option was a tarpaulin to go over the whole cockpit to keep the weather out and keep the canopy out of the crappy winter weather as I don't have an old spare

Re: shower cap for the roof.

We had one last year.  We got a transparent tarpaulin and tied it down with ropes around the whole cockpit area.  With the wind constantly pulling away at it, it started to lose eyelets all around.  Hopeless.  In the end, we simply looped a rope over the tarp and under the canopy -- just like a shower cap -- and it stood the rest of the winter like that.

(We needed transparent because it covered the solar panel which was trickle-charging the batteries.)

I have come to envy those folks with the fitted canopies, obviously cost a bit but I imagine do the job with absolutely minimal chance they will blow away - a serious risk at our marina as we have found to our (insurance company's) cost when the sliding roof blew off. And as Brian said above the wind tugging made short work of most of the eyelets on what might have been considered a reasonably tought tarp.