I think of air dryers as mini convection ovens. they just call them dryers because Burger brains like fried food so much. with convection, it's the same principle, faster consistent baking due to air movement homogenizing the air temps. and I want to say the rule of thumb for convection vs conventional bake times is like 25% reduced for convection.
I don't really have tips for crisping the outside of boiled potatoes. I would imagine short duration at very high temp, because as you heat the potatoes, the moisture inside is escaping outward and preventing it from drying. so it's more like you are trying to sear the outside, like they do with meat on a grille.... very short, localized heat at very high temp.
or like the last 5 minutes of baking a bread loaf with a thick crust, where you crank the already high temp up 20-50% to get the browning aka "maillard" effect you are looking for with a thick crust.
I've never tried what you are doing but I bet it can be done and will be well worth it.