I need some help on a project. I have an old V bottom boat with 3 air chambers for floatation. I am wanting to know if anyone has any experience with using the aerosol cans of foam to add floatation in a boat. I have thought about drilling several holes equi- distant apart along the top edge of the air chamber and 1/2 filling the chamber with 2-3 cans of the aerosol foam used to seal windows and doors. Does anyone have any experience doing this?