Well as we mentioned about parking if you're careful you only need to train once. I'm sure you can go one imaging session without dithering, heck if you train over 4 cycles you really only need to go 40min without dithering on the HEQ5 right?
Maybe I'm biased because I don't dither (no software capable of it). But in my experience hot pixels are easily picked up in image pre-processing and are much more easily fixed than eggy stars
