Re: canvas
If it's not an option, and you can't put your canvas on, then have it shrink wrapped or a mooring cover put on, then what you may need to do is put all your canvas on, then put some stitching treatment on there to keeps those from dry rotting on you (found in the camping section of stores) and then buy a spray canvas treater. Apply the treater with the canvas on, let it dry all the way. If possible, fold up the canvas real good and vacuum pack it. Then in the Spring, you may want to lightly dampen the canvas so it will stretch a bit and put it back on.