It's April and you're looking for a winter/foul weather bike.
One solution, of course, is to research all of the various new bike offerings and buy a brand new one. I'm sure that somebody offers exactly what you are looking for. But what fun would that be?
Or, every time that you go riding, every time that you visit a bike shop, tell everybody that you see exactly what kind of bike you are looking for. Something will pop up - always does. You've got time. The quest is always more fun than the destination.
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My greatest fear is all of my kids standing around my coffin and talking about "how sensible" dad was.