[C320-list] Winter storage

[Tom Grass]

We plan on keeping Bucket List (2008 Catalina Mk II - # 1135) at Irish Boat
Shop this winter in Charlevoix, Michigan - outside with the mast up.  We
have a custom boat cover - but I am concerned about snow coming down our
mast.  Having in mast furling - once we remove the sails, could water
collect inside the mast and do damage?   Have any of you experienced issues
with leaving your mast up all winter in a cold and snowy climate?  Thanks
for your opinions.  Tom Grass