RedactedNarrative: While on patrol at Utah Lake State Park, I received a call from dispatch about a submerged vessel and people in the water just off of the north jetty. I responded in the park boat. When I arrived on scene, there were three individuals standing in waist deep water, none of them were wearing PFDs. The first thing I had them do was to put life jackets on. They were one life jacket short, so I threw an extra one to him off of the patrol boat. The stern of their boat was submerged and resting on the mud. I pulled the port side of the patrol boat along the starboard side of their boat, and had them unload items that would float away into the patrol boat. As I was along side their boat, the wind and waves were pushing the patrol vessel against theirs, and even with the bumpers on the patrol boat, it was hitting into the side of theirs. There was damage caused to the windshield of their vessel, as well as scratches on the top port rail of their vessel as the patrol boat passed over the top of theirs. I asked if they could push their boat any closer to shore, and they said that they could not. I spoke with the park manager, and he told me that it was possible to still tow a submerged vessel in. I had one of the individuals hook my tow line to the bow eye of their boat, and then I had them walk to shore. I towed the vessel into the marina, and as I approached the docks, their vessel fully submerged. With the help of others on shore, we were able to use to tow line, and get the boat to one of the loading ramps. At that point the boat was upside down. We hooked another rope to the port of the vessel and used it to flip the boat upright again. We were then able to get the boat loaded onto the boat trailer. Upon the boat being pulled from the water, I gathered information from each of the passengers. I also asked if the boat was insured. I was told that they had just bought the boat, and that they thought that it was still insured by the previous owner. I told them that I would need to get proof of insurance from them, and that I would give them until April 27 to get it to me, otherwise I would have to put down in this report that there was no proof of insurance. I helped unload the belongings we had secured in the patrol boat, and get them back to the owners. I then took pictures of the vessel as it sat on the trailer.