repairing front deck soft spot.about a 2.5ft by 5ft cut out top skin using vib tool worked great.cleaned out old core balsa. I have done a lot of rough fiberglass work, motor mounts stuff like that. watching all the stuff on youtube I am assuming I should seal the bottom sheet.and seal the bottom core.let dry then mix a thicker mix put core in and weigh down a bit?sound right? I am using west system 206 slow hardener.thanks for any help