Similarly, check chainplate, davit and tabernacle bolts and fixings. If a laid deck and you don't have any leaks, you are indeed a lucky owner. Check the underside of the deck for water stains, use a torch if needed to look in every nook and cranny. Where the water exits of course can be a very long way from where it enters. At this point I would handle any damage to the interior, and save deckseam repairs for the warm weather.
Water trapped under the canvas can cause a great deal of damage.
The first places to look are in dead areas where the water may collect behind fillets and other woodwork which has been put on top of the canvas, and also in the angles of coamings, etc. There is no treatment for wood which has started to rot and the only thing to do is to cut out the affected parts well back beyond the seat of the rot and scarph in new wood with a waterproof resin glue. The canvas can have a patch let in where damaged or torn, put down on a good layer of wet paint, then painted on top. In The Bilge Inside the boat, remove all the floorboards you can, and prod all muck and dirt out of nooks, crannies and especially limber holes, and remove loose paint. If there is water in the bilge, suck it out with an Aquavac first, then vacuum out the dirt.