There is some talk now that it may be better to not totally wash all the fixer out of the prints. There is some thought that thiosulfate may actually help protect the paper from outgassing and the like. I am not up on it totally and I am not sure I believe it but I have had one print go bad in 35 years of fiber base printing.
In my new darkroom I will have two archival washers and a washing machine (zone6) that is sort of a holding tank for prints. I am gonna make a tray to fit into the washing machine to wash 4x5 and 5x7 negs.