If you are unlucky enough to have a pontoon boat that leaks, there are a few ways that you can go about finding the leak. The first step is to identify where the water is coming in. This can be done by taking the boat out of the water and looking for any areas where water is seeping in. Once you have found the general area where the leak is occurring, you can start to narrow down the exact location by feeling around for wet spots.
Once you have pinpointed the location of the leak, it is time to start trying to patch it up. If the leak is small, you might be able to simply use some sealant or caulk to plug it up. For larger leaks, however, you will likely need to replace a section of your pontoon boat's hull. This is not a difficult process, but it does require some basic boatbuilding skills and materials.
If you are not confident in your ability to repair your pontoon boat yourself, there are plenty of professional boatbuilders who would be more than happy to help you out. In most cases, it is actually cheaper and easier to just hire someone else to do the repairs for you. No matter what route you decide to take, fixing a pontoon boat leak is definitely something that can be done!