I used a yankee tank for about a year with mixed results. If the scene has no clear sky areas, you won't really have problems. Once you examine a clear sky closely, there seems to be an inherent problem with uneven development which I was never able to solve. It shows up as a mottled look, where you know there was nothing but plain sky.
This was with PMK developer, but I think it would have happened with any developer. I'm using tray development now and use one sheet at a time if it is an important negative.