Sometimes you will run into instances where you will get a hole in your kayak, but there is no need to panic. Many of the packrafts available on the market are inflated by the use of multiple chambers that are designed to keep you safe. If one of the chambers begins to lose air, the other chambers will stay inflated, so that you can make it to shore to repair the hole and get back out there.
Additionally, a lot of these products come with a repair kit. Repair kits typically come with a type of tape that is waterproof, so that you can patch the hole without waiting for the kayak to dry. If you don’t know where the leak is coming from, a neat little trick is to keep a small spray bottle with a little bit of dish soap in your repair kit. Simply spray the soapy water over the area you suspect the air is escaping, press down on the kayak slightly, and keep a lookout for bubbles. Wherever you see bubbles is the point where the air is escaping.