my wife and I changed our tri-door nightmare out for a version of the pleated shower door shown above. We love the way it wipes the water off and empties it back into the shower basin. It took roughly 4 hours to install the system correctly. Including sealing, which you MUST do.
We had first tried the shower curtain but decided quickly it was just not going to work for us. However, anything was better than trying to rebuild the tri-door nightmare again. Third rebuild in less than two years.