---

An effective way to quantitatively know the result is to weigh your boat before and after some length of time. We know the weight of water and truck scales are quite accurate.

May I suggest, in the interest of saving energy, that you turn off the blower for a couple of days and check for wetness. If the area is wet resume the treatment until it is dry again, repeat until no moisture shows at the drain area foam. You will then know that you have dried your foam as much as possible without using more electrical energy than needed.