RedactedNarrative: On 07/10/2021 at approximately 1605hrs Vessel 1 was being operated by Operator. Operator was fishing a cove 1/2 mile west of The Bluffs campground on the south side of Glen Elder Reservoir. As Operator was leaving the cove traveling North. Operator and passenger noticed a storm had been approaching and was skirting the east edge of Glen Elder Reservoir. The storm brought high winds and large waves. Operator had been using the trolling motor while fishing and went to the front of the vessel to bring the trolling motor out of the water to its traveling position as they came to the mouth of the cove. When Operator got back to the drivers seat the first wave came over the front of the bass boat and swamped the vessel before Operator could raise the bow of the vessel under power. The vessel then lost power and floated approximately 100yds to the west southwest to shore. The shore was rocky and the boat bounced on the rocks for approximately 1 hour until Marina Owner and Park Ranger came to pick up Operator and passenger. Marina Owner used his pontoon and towed the vessel back into the cove were it would be protected by the wind. Bystander was informed of the incident by Park Ranger at 0915 hrs and arrived on scene at 0945 hrs. On 07/12/2021 Marina Owner removed the vessel from the water and Bystander took pictures of the bottom of the vessel. The rocks had punched holes in the fiberglass on the bottom of the vessel. Nothing further to report