I prune tall canes in spring. However, if a cane might whip in the wind I do a light pruning, remove a foot or two.

I always prune in the spring too,but the bottom of all the canes are completely bare and way too tall will it help or hurt to prune in the fall??????

I don't think it will help to prune in the fall. I prune in spring when the rose is most energetic, as I think this maximizes blooming.