How are you packing your rainfly if you keep it detached? Are you putting in a separate bag? What size? waterproof bag? Do you keep in the the same bag as the hammock (assuming its not wet)?
I keep my fly separate in a small ditty bag at the top of the hammock storage bag...but I 'm thinking of putting in its own bishops bag type of waterproof stuff sack so that I can quickly hang and take it down on its own and can stuff it with the hammock without wetting it if raining.