I LOVE this thread. It should be called Everything You Always Wanted To Know About Archival Print Washing.
So here's my question...if you tray wash (and I like the idea of the tray with holes), how many prints can you have in the tray? Do prints touching each other stop, reverse, or severly hamper the diffusion/leaching process? Let's say we're talking about 8x10 prints in a 16x20 or 20x24 tray.