Originally Posted by caberg
.......If it was a new impeller in the fall, should be fine, right?.....
Unfortunately, no. The problem with leaving an impeller in one position for the entire winter is the few blades that are extremely compressed and could have been weakened. Take a look and you'll see what I mean. There is no way to visually assess this wear. Sorry.
The time to put a new impeller in is the beginning of the season, not the end. Unless you specifically asked for one or were still going sailing, I don't think a reputable yard would install a new impeller to just sit there all winter.