Went out early one morning lake was calm and quiet as we floated we could here what sounded like water dripping into a tube when the boat rocked. Sounded like a small amount of water being poured into a empty tube. We heard this for a a few min. Then seemed to stop. We were out the rest of the day and did not here again. boat seems to be sitting the same and handling ok very strange. Anyone had this issue the only other thing I thought of later was maybe some water going down the drain holes in the seat boxes. my boat is a 2019 tri toon I am going to check and see if there are any plugs on top of tubes to put a hose in and check or may have to pull it out and try to shake it. Any input would be great. Thank you