Return the baking soda water bath to boiling.
Melt the butter and have a brush ready. Measure a couple tablespoons coarse salt into a small bowl.
Working in batches, add about 10 pretzel dog bites at a time to the baking soda water bath. They'll sink then begin to rise to the top. After about 30 seconds, remove them from the bath with a spider and transfer to a prepared baking sheet.
When the sheet is full, brush each pretzel with melted butter and sprinkle with salt (you can do this after they come out of the oven, too).
Continue working in batches until all the pretzel dog bites have been in the baking soda bath.
Bake for 12 - 15 minutes or until they are dark brown and baked through.