Whatever your storage methodology, upkeep is key. The general rule of thumb for outdoor furniture is to apply oils and sealants about every once to twice a year, depending of course on your individual concerns, temperature, climate, etc.
No matter what kind or style of rocking chair you choose, make sure it is comfortable. Chairs are made in many sizes and with varying degrees of slant in the seat. Make sure that the chair is comfortable for you to sit in and that it is easy to rock. The last thing you want is to get your new rocking chair home to find that it is uncomfortable and anything but relaxing because you get a work out rocking it. Do you have a set of indoor wicker chairs where you love to spend your free time? Then it is necessary for you to look after your pieces of furniture so they will last longer.