Yep, I've been leaving the fan off. There's no huge overhangs so I'm lucky in that regard.

At 255 F the stringing is acceptable, easy to clean up, but I expect it to get worse as I crank up the temp. But that was going to be my next step. I did a group of 9 and they seemed to have much better layer bonds. Still, the "One at a Time" thing may be the most reliable. I'll also revisit the design and see if I can add a bigger fillet in the area that's having trouble.

One thing I did find was that the Z-hop caused serious consistent stringing, and when I shut that off it dropped way down.