Pledge is a fine product to use on most rod finishes. Before you apply the polish, just make sure of several steps. The rod should be thoroughly cleaned. Mild dish washing detergent will do the job. Use an old tooth brush or any soft brush to reach the hard to get to places where salt/corrosion buildup will occur both on the blank and reel seats.
Check the thread raps, clear coats for cracks, even run your fingers through the guide and check for sharp edges and loose ceramics inserts. Check guide feet also. Now's the time, if you have to, to send it in for repairs. This way it will be ready for spring.
Storing it is your last concern. Place it in the sock and tube and you should be all set. Never keep it strung or store it horizontally if it can be avoided. In the spring put a little paraffin wax or dubbing wax on the ferrule.