Last December we purchased a three year old 25 ft. Dutchman in mint condition, it snowed before we could get it covered. I spent a fair amount of time removing our record snow load.
This year we decided to put the cover on because of the snow and we were storing it in a pine grove. Judging from the cover, it had been used and had received most of the abuse. I patched the cover holes and padded the sharper TT edges with foam and put it on.
We will know in the spring if it was worth the effort.