I live in Buffalo, NY. In winter, most of the car washes around here have "undercarriage washes" to wash the salt off the underside of the cars to keep them from rusting out, which diligent car owners utilize at least once a week. When we added an SWG to our 14 foot Summer Escapes last year, I considered this and rinsed off my pool frame off after every use only missing a few rinses here and there. I made it part of my nightly pool maintenance routine. Our pool was already on it's 4th season and already showing some, but very little, signs of rust(nothing structurally compromising) in the uprights, but NONE in the T-joints, when we put it up, BEFORE we added the salt, and I didn't see or notice any more when we took it down last September. My personal belief is that most of the people experiencing a lot of rust on their soft sided pools are either adding too much salt to their pools and/or not rinsing it off after use. OR they live within 100 miles of ocean and didn't realize that salt in the air can travel that far inland(particularly in US Southern States). Another factor could be leaving it up over winter and living relatively close to a road that gets salted. I know someone who emptied their intex, removed the legs and just dropped the top, left it entirely uncovered all winter, in a yard that is protected by chain link fence only, and backs up to main road that gets salted DAILY in winter and couldn't figure out why the top frame had rusted so much. She thought her pool was far enough away from the road. Except she failed to account for how far a snow plow can actually throw salty slush and water, and that water continually evaporates, even in winter, and takes the salt particles with it when it travels through the air. All that said, really, I think just make rinsing the frames part of your nightly pool maintenance routine and it should be ok.
