When I got Judicious The hull was sodden but the core was still good like yours and it was suggested that to drill holes in the hull at a rate of 9 per sq foot tent off the boat and use infrared heaters and dehumidifiers. which would work like your vacum after boat dried out the holes were epoxy nailed.The holes were drilled from the outside through the outer skin then a flat nose drill to clean the inner skin so that the epoxy would stick to the inner skin it worked a treat.