Yes, you can dunk....
However, cross contamination can become a problem.
Trapping dye isnt too much of an issue, as the accumulation of diluted dye doesnt seem to effect the sealer overmuch. Smut issues eventually, but if you change your sealer every now and again, I dont see that as an issue.
Trapping acid, however, WAS a problem for me. Following acidrains solution, I mixed up distilled water with some baking soda to neutralize the acid. Works good to get in all the crevices, and keeps the acid out of your dye, and from bleaching the dye off when you dont notice its filled a hole.
I would recommend keeping with the rinsing, unless you want to be replacing several gallons of distilled water with each batch. I found the caswell squirter to be a little less beefy than I would have liked, a spritzer with a little more guts seems to work great for me.
Again, I am still a nob, but a nob with decent anodizing results. Maybe one of the experienced guys can confirm or deny what I have to say on this.
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